Venous Insufficiency

• Department of Physical Medicine and Rehabilitation, Health Sciences University Sultan Abdulhamid Han Training and Research Hospital — Istanbul, Uskudar, Turkey (Türkiye)

• Site 17 — Guntersville, Alabama, United States
• Site 2b — Castro Valley, California, United States
• Site 19b — Glendale, California, United States
• Site 36 — Oxnard, California, United States

• University of Texas Southwestern Medical Center — Dallas, Texas, United States

Not specified

• Hospital Israelita Albert Einstein — São Paulo, Brazil

• Department of Dermatology, Frederiksberg Bispebjerg Hospital — Bispebjerg, Capital Region, Denmark
• Department of Physiotherapy and Occupational Therapy, Rigshospitalet — Copenhagen, Capital Region, Denmark
• Department of Physiotherapy and Occupational Therapy, Herlev and Gentofte Hospital — Herlev, Capital Region, Denmark
• Department of Physiotherapy and Occupational Therapy, Amager Hvidovre Hospital — Hvidovre, Capital Region, Denmark

• University Hospital of Tours — Tours, France

• CHU de Montpellier - Hôpital Saint-Eloi — Montpellier, France
• CHU de Nîmes - Hôpital Universitaire Carémeau — Nîmes, France

• Stanley G Rockson — Oakland, California, United States

• Pezhman Kharazm, MD — Gorgan, Golestan Province, Iran