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, Gulhane School of Medicine, Health Sciences University, Ankara, Turkey
5. Division of Vascular Surgery, Department of Surgery, University of Washington Medical Center, Seattle, WA, USA