1. Inovia Vein Specialty Centers, Bend, OR, USA
2. Division of Vascular Surgery, Department of Surgery, Stony Brook Medicine, Stony Brook, NY, USA
3. Department of Anatomy, University “La Sapienza”, Rome, Italy
4. Department of Cardiovascular Surgery, Health Sciences University, Gulhane School of Medicine, Ankara, Turkey
5. Division of Vascular Surgery, Department of Surgery, University of Washington Medical Center, Seattle, WA, USA