Venous Insufficiency

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

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

Not specified

• 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

• "Medalp" private surgery clinic — Saint Petersburg, Sankt-Peterburg, Russia

• St. Joseph's Vascular Institute — Orange, California, United States
• UCSF — San Francisco, California, United States
• Yale New Haven Hospital — New Haven, Connecticut, United States
• Christiana Care Hospital — Newark, Delaware, United States

• University Hospital Linköping — Linköping, Östergötland County, Sweden
• Vrinnevisjukhuset — Norrköping, Östergötland County, Sweden

• 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