Design of Customer Loyalty Surveys

Periodic measurement of customer loyalty can be an excellent way to gauge the success or failure of ongoing customer relationship management. Typically, online customer loyalty surveys are administered as part of a program of client satisfaction surveys. This allows for simultaneous measurement of both aspects of the customer relationship, which are in many cases (but not always) interrelated items.

A well-designed client survey will not exceed 10 to 12 minutes in length and ask customers to rate overall satisfaction with the company, provide specific reasons for overall satisfaction or dissatisfaction, inquire as to customer loyalty, and include a number of targeted questions regarding satisfaction with specific products or services and aspect of the customer experience. Developing the final list of customer experience attributes is an important part of the design process and needs to cover the key issues that are potentially related to overall satisfaction and customer loyalty. Most importantly, the attributes should be fine-tuned for the specific product or service offerings of the company and use wording that is easy for the average customer to understand and interpret as intended.

As part of the design process, it is also important to examine where the company offers its products via different channels or has distinct products or service offerings requiring separate sets of questions. In such cases, the use of online customer surveys provide the opportunity to use skip logic so that different customer segments can view different sets of questions based on their specific profiles. These questions should be appear as supplements to the main survey questions, which should be applied across all segments (if possible) to facilitate overall customer satisfaction and loyalty measurement.

In designing customer loyalty surveys, it can also be important to collect information concerning customer demographics, other characteristics, and/or past behavior or usage of the company’s products and services, or the use of similar products and services in the general market place. A key advantage of online customer feedback surveys is that it can often circumvent the need to ask many of these questions on the survey instrument. Instead, the questionnaire can be pre-populated with relevant profiles or the information can be merged with the post-survey data to facilitate reporting analysis. This reduces the length of the survey questionnaire.

At this point, it is important to comment on several key aspects of the survey design process that are often over-looked when conducting a customer loyalty survey. First, correct sample selection is critical. This phase is easy if all customers are invited to participate in the survey. However, if only select customers are invited or the number of available email addresses is limited, sample selection needs to represent the overall customer population or the collected feedback may not correctly represent the overall perspective of the customer population. Furthermore, even if the sample is selected in the correct manner, or all customer sample is used, the mix of respondents may differ from the company’s survey population and distort the results. In the end, statistical techniques might be needed to accurately measure overall customer feedback and provide correct weight to each segment.

A second aspect of customer loyalty and client satisfaction surveys that is often over-looked is the use of existing customer information. This might include specific details on the type of service (such as a special bank transaction), type of product, number of support requests, number of years as a customer, and a long list of other metrics. Not only can this information be used to trigger skip logic on the online survey, but also variable inserts can be used to create respondent-specific questions. For example, “what is your overall rating of the [variable insert] you received on [variable insert] from the Credit Union?”

In summary, effective survey design of online client satisfaction and customer loyalty surveys can be a complex process requiring extensive review of existing customer profiles, identifying key attributes of the customer relationship, scoping channels or segments of product and service offerings, and making sure that both sample selection and the actual respondent pool is representative of the overall customer survey population. Although company budgets can sometimes limit the ability to engage in extensive data analysis of the results, it is not a good idea to move forward with a customer feedback survey without careful questionnaire design and sampling techniques.

Marc Tillman is a member of the professional services staff at Amplitude Research, Inc., headquartered in Boca Raton, Florida. Amplitude Research is one of the top customer survey firms specializing in client satisfaction surveys and customer loyalty surveys.

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Client Satisfaction Surveys and Online Customer Surveys – Part 3

This Article is Part 3 of a series of articles on the subject of client satisfaction surveys. Part 1 covered the early planning stages including project goals and reporting deliverables. Part 2 examined selection of a survey methodology, with emphasis on the availability and quality of the records list. Part 3 focuses on the use of online customer surveys.

Once it is established that there is an adequate email records list for conducting client satisfaction surveys online, it must be determined whether an online customer survey is still the best choice over other methodologies such as mail or telephone surveys. This decision will often rest on a choice between telephone and online customer surveys, although mail surveys can the best choice in certain cases. The survey vendor should be able to provide helpful advice in making this selection. Key decision factors include project budget and customer relations.

Generally, client satisfaction surveys that focus on b2c relationships have similar pricing for telephone and online customer surveys. These types of surveys might include retail customers or service providers such as accounting, personal banking, auto repair, or mortgage lending. The common thread is a non-enterprise product or service where the end user is typically an easy-to-reach survey participant. For these kinds of client satisfaction surveys, the best choice can often be a telephone survey due to higher response rates.

Cost Considerations and Online Customer Surveys

But where client satisfaction surveys are of a b2b nature (such as enterprise products, services or software), and/or the end user is a corporate executive, online customer surveys can often result in lower pricing than telephone surveys, and similar or better response rates given the difficulty of reaching the respondent by phone. In addition, given the ongoing business relationship with most enterprise products or services, the customer might have a strong interest in timely participation in online customer surveys. In the end, each business relationship is different, and should be examined based on its own set of circumstances.

Customer Relations and Client Satisfaction Survey

Cost issues aside, another key consideration that is often overlooked in designing client satisfaction surveys is the overall impact on client relations. At its most basic level, this means considering the type of methodology most customers are comfortable using. For example, if there are ongoing email exchanges between the company and its customers, online customer surveys might be a natural choice. On the other hand, if customers rarely communicate via email, then blanketing them with email invitations to online customer surveys might not be the best choice even if email addresses are readily available.

Another element that is often overlooked is whether reaching ALL customers should be considered for client relations’ reasons, even though sampling of a portion of the customers is less costly and/or adequate from a statistical standpoint. Put a different way, it can sometimes benefit client relations to ask customers for their feedback on how you are performing. In some cases, such as alumni surveys, it might be politically incorrect to survey only certain alumni to the exclusion others. If that is the case, online customer surveys can often provide the least expensive method of reaching all of the participants while placing your corporate brand in front of them.

Determining the best survey methodology is not always an easy decision. The starting point is typically the availability and quality of the records list. However, this alone is not necessarily the determining factor. Cost considerations and client relations must also be considered. For many client satisfaction surveys, this will boil down to a choice between telephone surveys and online customer surveys. Frequently, the price points are similar when the product or service is delivered b2c instead of b2b. But where enterprise products or difficult-to-reach executives are involved, online customer surveys are often the least expensive option for conducting client satisfaction surveys provided the participants are comfortable responding online. Lastly, and often overlooked, are client relations’ considerations, such as allowing all customers to participate instead of a select group.

Marc Tillman is a member of the professional services staff at Amplitude Research, Inc., a full-service survey company located in Boca Raton, Florida. Amplitude Research specializes in client satisfaction surveys including, mail, telephone, and online customer surveys.

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Customer Satisfaction Surveys and Client Satisfaction Surveys – Part 2

This Article is Part 2 of a series of articles on the subject of customer and client satisfaction surveys. Part 1 covered the early planning stages for customer satisfaction surveys including project goals, reporting deliverables, and initial discussions on survey methodologies.

The next step for an effective customer satisfaction survey is gaining a better understanding of the best survey methodology given the client’s project goals and budgetary requirements. As much time as needed should be spent discussing the characteristics of the target survey population. For example, if the customers are other businesses, what are their specific job titles and/or job functions? What is the typical client revenue size buying the products or services? If buyers are primarily comprised of consumers rather than businesses, what are the specific demographics of the customer – such as age, gender, household income, region of the country, etc.?

Once the customer demographics are fully identified, the most effective survey methodology can be explored. This will require a full and complete understanding of the scope and quality of the customer records. Most clients will have this information at hand and can provide estimates on the availability of email addresses, phone numbers or mailing records, as well as the quality / reliability of each. Others will need to check and get back to you with “best guesses” of list quality. The provided records information can then be examined in concert with the customer characteristics to determine the best approach for gathering feedback.

For example, a client might advise that the records list includes highly accurate phone numbers of almost every customer. However, upon further inquiry, the records do not include the direct phone numbers or extensions of the targeted respondents at each customer location and/or the individual names of the key contacts are unreliable. This can result in significant cost issues for a telephone survey methodology where interviewers face the prospect of “networking” at each business to find the correct person.

A second example might be a large list of email records – which is always good news – with the warning that most of the records are updated sporadically. In this situation, a well-designed approach might begin with an online customer satisfaction survey followed by mail or telephone interviewing. Or, if the client sells to a wide group of customers, it might be possible to reach qualifying participants through a web panel.

In the end, however, most clients maintain lists of customers that include multiple fields of information. This means that budgetary elements, as well as survey sampling issues, often play an important role in selection of the best methodology for conducting a customer satisfaction survey. A skilled research supplier should be able to analyze this information and come up with a plan of action based on the quality and types of records maintained by the client, the availability of web sample as a possible supplement, and the objectives of the survey. The use of multiple survey methodologies can often provide a nice balance between cost and effective sampling in the realm of customer satisfaction surveys and should be considered, as needed, to meet the goals of the client.

Marc I. Tillman is a member of the professional services staff at Amplitude Research, Inc., a full-service mail and online survey company specializing in market research surveys and client satisfaction surveys. Please visit Amplitude’s customer satisfaction surveys page to learn more about its service offerings.

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Customer Satisfaction Surveys and Client Satisfaction Surveys – Getting Started

This Article is Part 1 of a series of articles on the subject of customer and client satisfaction surveys. Part 1 covers the early planning stages for customer satisfaction surveys.

The starting point for effective customer satisfaction surveys is gaining a clear understanding of the goals and objectives of the study. Typically, the process begins with a conference call between the client and the survey company to discuss the products/services provided by the client, type of users (B2B or B2C), demographics of the client’s customers, markets served (local, regional, national, or global), and nature of the sales process. Essentially, the vendor asks the client to describe the organization’s business model.

Another early discussion topic is clarification of the overall goals of the client satisfaction survey. For example, is it measurement of overall satisfaction, measurement of key aspects of customer relationship interactions, or is it a more narrow goal – – such as measurement of satisfaction with the purchasing process, product quality, or after-sale service? Also, will it be an ongoing survey distributed over an extended time period (for example, after each transaction) or will it be monthly, semi-annual or annual measurement? This information will help the survey company identify survey length, survey topics, and preliminary survey questions for the first draft of the survey instrument. If the client has developed questions on its own, these can be forwarded to the vendor for review if the client is willing to do this in advance of a formal contract.

Another important consideration is identifying the most effective survey methodology based on the client’s customer demographics and project goals. A final decision does not need to be made at this point in the process; however, viable options will need to be identified for cost purposes. It is sometimes appropriate for a vendor to ask the client about project budget as this can impact the scope of the project. Different methodologies – phone interviewing, mail surveys, and Internet survey research – each have their own nuances which can work better or worse (from cost, efficiency, and response rate perspectives) in different situations.

Asking the client about the quality and availability of its customer records is critical. If good quality records do not exist for the TARGETED survey respondents or are available in one medium only, this can severely impact the viability or cost of the project. The viability of Internet survey research can be determined by asking the client to confirm the quantity of customer email addresses and how often those records are updated. If the response is positive, many clients will favor using Internet survey research because of its cost savings and efficiency.

The final piece of the puzzle even in the early stages of the survey process is to try to pin down desired data analysis and reporting deliverables. The form of deliverable can impact the cost of the project and also define sample size requirements. For example, where the client desires analyses among multiple segments of customers and/or customer interactions, the study may require additional responses to achieve valid response data within each segment.

Another reporting consideration is whether the client has conducted similar surveys in the past and wants to use this information for internal benchmarking of results. If so, the reporting process will often be more expensive to include relevant statistical comparisons between the different waves.

In summary, the early stages of customer satisfaction surveys is an information gathering process where the survey company needs to understand the business model of the client, its customer demographics, nature of the sales process, goals of the customer satisfaction survey, availability of customer records (including email addresses), and reporting requirements. A skilled research supplier will know which questions to ask and then be able to process this information and provide a quote targeted to the needs of the client in terms of its budget and survey objectives.

Marc I. Tillman is a member of the professional services staff at Amplitude Research Inc., a full-service mail and online survey company specializing in market research surveys and client satisfaction surveys.

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Varicose Veins Becoming an Issue? InvisiVein Offers Free Second Consults

Dr. Joseph Mullaney offers advice on varicose vein removal. InvisiVein offers free second consults and treats both spider veins and varicose veins.

CHARLESTON, S.C. – Feb. 24, 2017 – PRLog — Shorts weather has already taken over the lowcountry and South Carolina. While many can’t wait to break out the spring and summer clothes, some may dread this warmer weather because of unsightly veins. InvisiVein treats both spider and varicose veins and provides the latest state of the art technology coupled with the highest level of personalized service and care. Established in 2003, InvisiVein is the Charleston area’s leading provider of high end laser technology for vein treatment. Continue reading Varicose Veins Becoming an Issue? InvisiVein Offers Free Second Consults

Charleston Vascular Surgery Announces Grand Opening, Offering Vascular Care

Charleston Vascular Surgery is a compassionate vascular specialist in the extended Charleston, SC area, where state-of-the-art treatment, convenience, and friendly service collide.

CHARLESTON, S.C. – Jan. 16, 2017 – PRLog — Charleston Vascular Surgery now offers minimally invasive vascular therapies in 3 full-service locations throughout South Carolina. Distinguished for exceptional quality and customer care, their offices are now accessible to patients state-wide who seek a personalized medical experience.

Led by Dr. Jonathan Kittredge and Dr. Rick M. Roberts, two highly respected and board-certified specialists, Charleston Vascular Surgery is quickly becoming South Carolina’s premier choice for first-rate vascular care.

Dedicated to providing minimally-invasive care with a focus on longevity, Dr. Roberts and Dr. Kittredge offer a range of safe and effective therapies. Their attention to detail, coupled with warm patient care, is specially designed to help their clients’ restore health and achieve long-lasting wellness. Continue reading Charleston Vascular Surgery Announces Grand Opening, Offering Vascular Care

Tired of Varicose Veins? InvisiVein Offers Excellent Care at Best Price in Charleston

InvisiVein provides the latest state of the art technology coupled with the highest level of personalized service and care. InvisiVein is the area’s leading provider of high end laser technology for vein treatment.

CHARLESTON, S.C. – Nov. 15, 2016 – PRLog — InvisiVein provides the latest state of the art technology coupled with the highest level of personalized service and care. Established in 2003, InvisiVein is the Charleston area’s leading provider of high end laser technology for vein treatment. They offer a complete array of varicose vein treatments and spider vein treatments performed by our board certified physicians specializing in vascular/interventional medicine and phlebology.

Varicose veins are abnormal bulging veins below the skin surface that are unsightly and often painful. They frequently cause swelling and discomfort in the legs, especially during periods of prolonged standing. If left untreated, varicose veins can lead to permanent skin changes and sometimes ulceration. The InvisiVein™ EVLT procedure is a laser treatment alternative to traditional surgical stripping, and is covered by most insurance plans.

The InvisiVein™ Laser works by delivering a highly concentrated beam of light energy to the targeted (vein) tissue with extreme precision so as not to affect the surrounding tissue. This closes the cause of varicose veins and allows blood flow to be redirected to healthy veins. Laser treatments have proven their safety and effectiveness through years of use and have far less risk and complications than the more invasive surgical vein stripping procedure. Patients resume activity immediately and see results quickly.

To learn more, or schedule an appointment: http://www.invisivein.com/varicose-vein-removal/

Crighton Olive Dunn Surgical Group Inc. Earns Vein Center Accreditation by IAC

More than one half of Americans age 50 and older are affected by varicose veins. Varicose veins occur when the valves in the leg veins no longer function, causing blood to pool in the legs. In some cases, this condition progresses to a more serious form of venous disease called chronic venous insufficiency (CVI). Whether to relieve symptoms and/or improve appearance, treating varicose veins can be performed by vein centers that specialize in the evaluation and management of superficial venous disorders.

There are many factors that contribute to an accurate vein treatment and management. The training and experience of the vein specialist performing the procedure, the type of equipment used and the quality assessment metrics each facility is required to measure, all contribute to a positive patient outcome. IAC accreditation is a “seal of approval” that patients can rely on as an indicator of consistent quality care and a dedication to continuous improvement.

Crighton Olive Dunn Surgical Group Inc. located in Springfield, MO has been granted accreditation by the Intersocietal Accreditation Commission (IAC) in Vein Center in the area of Superficial Venous Treatment and Management.

Accreditation by the IAC indicates that Crighton Olive Dunn Surgical Group Inc. has undergone an intensive application and review process and is found to be in compliance with the published Standards, thus demonstrating a commitment to quality patient care in vein treatment and management. Comprised of a detailed self-evaluation followed by a thorough review by a panel of medical experts, the IAC accreditation process enables both the critical operational and technical components of the applicant facility to be assessed, including representative case studies and their corresponding final reports.

IAC accreditation is widely respected within the medical community, as illustrated by the support of the national medical societies related to venous disorders, which include physicians, physician extenders, nurses and ultrasound technologists. IAC Vein Center is supported by the following organizations while operating independently of their activities: American Academy of Dermatology (AAD); American College of Phlebology (ACP); American College of Surgeons (ACS); American Society for Dermatologic Surgery Association (ASDSA); American Venous Forum (AVF); Society for Clinical Vascular Surgery (SCVS); Society for Vascular Medicine (SVM); Society for Vascular Nursing (SVN); Society for Vascular Surgery (SVS); Society for Vascular Ultrasound (SVU); and Society of Interventional Radiology (SIR).

When scheduling a vein center procedure, patients are encouraged to research the accreditation status of the facility where their treatment and management will be performed and can learn more by visiting intersocietal.org/vein/main/patients.htm.
About IAC

IAC provides accreditation programs for vascular testing, echocardiography, nuclear/PET, MRI, diagnostic CT, dental CT, carotid stenting, vein treatment and management and cardiac electrophysiology. The IAC programs for accreditation are dedicated to ensuring quality patient care and promoting health care and all support one common mission: Improving health care through accreditation®. To date, the IAC accrediting divisions have granted accreditation to more than 14,000 sites throughout the United States, Canada and Puerto Rico.

The Vein and Laser Center of New Jersey Earns Vein Center Accreditation by IAC

More than one half of Americans age 50 and older are affected by varicose veins. Varicose veins occur when the valves in the leg veins no longer function, causing blood to pool in the legs. In some cases, this condition progresses to a more serious for of venous disease called chronic venous insufficiency (CVI). Whether to relieve symptoms and/pr improve appearance, treating varicose veins can be performed by vein centers that specialize in the evaluation and management of superficial venous disorders.

There are many factors that contribute to an accurate vein treatment and management. The training and experience of the vein specialist performing the procedure, the type of equipment used and the quality assessment metrics each facility is required to measure, all contribute to a positive patient outcome. IAC accreditation is a “seal of approval” that patients can rely on as an indicator of consistent quality care and a dedication to continuous improvement.

The Vein and Laser Center of New Jersey Located in Hamburg, NJ has been granted accreditation by the Intersocietal Accreditation Commission (IAC) in Vein Center in the area of Superficial Venous Treatment and Management.

Accreditation by IAC indicated that The Vein and Laser Center of New Jersey of New Jersey has undergone an intensive application and review process and is found to be in compliance with the published Standards, thus demonstrating a commitment to quality patient care in vein treatment and management. Comprised of a detailed self-evaluation followed by a thorough review by a panel of medical experts, the IAC accreditation process enables both the critical operational and technical components of the applicant facility to be assessed, including representative case studies and their corresponding final reports.

About IAC

IAC provides accreditation programs for vascular testing, echocardiography, nuclear/PET, MRI, diagnostic CT, dental CT, carotid stenting, vein treatment and management and cardiac electrophysiology. The IAC programs for accreditation are dedicated to ensuring quality patient care and promoting health care and all support one common mission: Improving health care through accreditation. IAC accreditation is widely respected within the medical community, as illustrated by the support of the national medical societies related to venous disorders, which include physicians, physician extenders, nurses, and ultrasound technologists. To date, the IAC accrediting divisions have granted accreditation to more than 14,000 sites throughout the United States, Canada, and Puerto Rico.

The Vein and Laser Center of New Jersey is one of only two accredited IAC facilities in New Jersey and the only one in Northern New Jersey. Our office is also IAC accredited in Vascular Testing. Congratulations!

Covidien Announces Five-Year Results from the ClosureFast™

Covidien Announces Five-Year Results from the ClosureFast™ Long-Term European Multi-Center Study in Patients with Lower Limb Venous Disease

Study Demonstrates Long-Term Durability of the ClosureFast™ Radiofrequency Ablation System for Treatment of Chronic Venous Insufficiency

MANSFIELD, Mass.–(BUSINESS WIRE)–Covidien (NYSE:COV), a leading global provider of healthcare products, today announced the five-year results of the ClosureFast™ Long-Term European Multi-Center Study in patients with Chronic Venous Insufficiency (CVI). This study evaluates the five-year outcomes of a minimally invasive endovascular therapy for treatment of CVI.

The ClosureFast Study was conducted prospectively at eight centers in Europe. The Venefit™ procedure (using the ClosureFast radiofrequency ablation catheter) was used to treat 295 lower limbs in 225 patients diagnosed with superficial venous reflux, the underlying cause of varicose veins and CVI. This progressive medical condition affects the veins in the leg and compromises their ability to carry blood back to the heart. This is a worldwide issue and, in fact, impacts over 30 million Americans in the United States alone.1 If left untreated, varicose veins can advance to CVI, which, in severe cases, may result in lower leg pain, skin damage, and leg ulcerations.

“The five-year final analysis from the ClosureFast Study shows sustained treatment success in anatomical and clinical categories and supports its leading position in endovenous vein treatment,” said Thomas Proebstle, MD, Universitaets Hautklinik Heidelberg, Germany, who recently delivered the study results at the American College of Phlebology 26th Annual Congress.

ClosureFast Study Design and Five-Year Results

This prospective, multi-center study enrolled 225 patients and treated 295 limbs at eight centers in Europe from April 2006 to June 2007. The study treated patients diagnosed with superficial venous reflux with the minimally invasive Venefit procedure using the ClosureFast radiofrequency ablation catheter.

Patients were evaluated following the procedure by duplex ultrasound imaging and clinical examination at three days, three months, six months and in yearly intervals up to five years. Of the 295 treated limbs, 233 (79%) were available for examination at five years. According to Kaplan-Meier analysis, at five-year follow-up, full occlusion of the treated vein was observed in 92% of patients (vs. 98% at one year). The vast majority (95%) of patients were free of pathological venous reflux (vs. 99% at one year). This demonstrates durable results of the Venefit™ procedure out to five years.

The average Venous Clinical Severity Score (a multifactorial score measuring disease severity and quality of life) improved from 3.9 ± 2.1 before treatment to 1.3 ± 1.7 at 5 years. In addition, only 14% of limbs were CEAP (disease severity classification) class 3 or higher at 5 years, while, at baseline, 48% of limbs were in the same category.

“This pivotal study provides substantial long-term data on relevant end-points to help clinicians decide the appropriate treatment for their patients, thus defining Covidien’s commitment to a strong foundation of clinical research,” said Mark A. Turco, MD, Chief Medical Officer, Vascular Therapies, Covidien.

About CVI and the Venefit Procedure

CVI, or Chronic Venous Insufficiency, is a progressive, sometimes debilitating medical condition. It occurs when valves in the veins of the lower leg no longer function to push blood back to the heart. This allows blood to flow backward, or reflux resulting in enlarged, or varicose, veins. If left untreated, the condition can progress, and, in severe cases, can result in lifestyle-limiting lower leg pain, skin damage and ulcerations. Traditional surgical treatments that close or remove the diseased veins, including vein stripping, may be painful and can result in long recovery times for patients.ii

Alternatively, patients can be treated with a minimally invasive endovascular procedure such as the Venefit procedure. During the Venefit procedure, the ClosureFast catheter is inserted into the diseased vein and radiofrequency energy is used to seal the vein shut. Blood that would normally return to the heart through the diseased vein travels back through other veins instead. Over time, the treated vein shrinks and is absorbed by the body. Compared with surgical options, minimally invasive ablation of the vein can result in less pain and quicker recovery time.ii

About Covidien

Covidien is a leading global healthcare products company that creates innovative medical solutions for better patient outcomes and delivers value through clinical leadership and excellence. Covidien manufactures, distributes and services a diverse range of industry-leading product lines in three segments: Medical Devices, Pharmaceuticals and Medical Supplies. With 2012 revenue of $11.9 billion, Covidien has 43,000 employees worldwide in 70 countries, and its products are sold in over 140 countries. Please visit www.covidien.com to learn more about our business.

1 Gloviczki P, et al. The care of patients with varicose veins and associated chronic diseases: clinical practice guidelines of the Society for Vascular Surgery and the American Venous Forum. JVS; May 2011. ii L. H. Rasmussen, M. Lawaetz, L. Bjoern, B. Vennits, A. Blemings, and B. Eklof, Randomized Clinical Trial Comparing Endovenous Laser Ablation, Radiofrequency Ablation, Foam Sclerotherapy and Surgical Stripping for Great Saphenous Varicose Veins. British Journal of Surgery Society Ltd, Wiley Online Library, www.bjs.co.uk, March 15, 2011.