1. Division of Interventional Radiology, Weill Cornell Medicine-New York Presbyterian Hospital, New York, NY, USA
2. REX Vascular Speicalists, UNC Health, Raleigh, NC, USA
3. Center for Vein Restoration, Morristown, NJ, USA
4. Center for Vein Restoration, Toledo, Ohio and Detroit, MI, USA
5. Indiana Vein Specialists, Carmel and Fishers, IN, USA
6. Veincare Centers of Tennessee, Clarksville, TN, USA
7. Department of Cardiology, Yale School of Medicine, Norwich, CT, USA
8. Division of Dermatology, Penn State College of Medicine, Hershey, PA, USA
9. Texas Skin and Vein, San Antonio, TX, USA
10. Department of Medicine, Jobst Vascular Instituteof Promedica, Toledo, OH, USA
11. Granzow Lymphedema and Lipedema Center, Jacksonville, FL, USA
12. Division of Interventional Radiology, Northwestern UniversityFeinberg School of Medicine, Chicago, IL, USA
13. Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
14. Department of Vascular Surgery, Massachusetts General Hospital, Stoneham, MA, USA
15. Lake Washington Vascular Surgeons, Bellevue, WA, USA
16. Inova Vein Specialty Center, Bend, OR, USA
17. Division of Vascular and Endovascular Surgery, William Jennnings Bryan Dorn VA, Columbia, SC, USA
18. Vein Clinics of America, Plano, TX, USA
19. Department of Surgery, University of WashingtonSchool of Medicine, Seattle, WA, USA