1. Division of Interventional Radiology, Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL (K.R.D.).
2. Division of Vascular and Interventional Radiology, Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (S.S.S.).
3. Center for Vein Disease, Division of Vascular Surgery, Englewood Hospital and Medical Center, NJ (S.E.).
4. Vascular Care Connecticut, Darien, CT (P.J.G.).
5. EndoVascular Consultants, Wilmington, DE (M.J.G.).
6. Lake Washington Vascular Surgeons, Bellevue, WA (K.G.).
7. Department of Vascular Surgery, MedStar Washington Hospital Center, DC (M.M.K.).
8. Bradenton Cardiology Center, Manatee Memorial Hospital, Bradenton, FL (S.J.M.).
9. Venous and Lymphatic Center, Sanger Heart and Vascular, Atrium Health, Charlotte, NC (E.H.M.).
10. Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, MA (E.A.S.).
11. Division of Vascular and Endovascular Surgery, Mount Sinai Health System, New York, NY (W.T.).
12. Department of Vascular Medicine, OhioHealth Riverside Methodist Hospital, Columbus, OH (R.K.).