1. Department of Vascular Surgery, Saiseikai Central Hospital
2. Department of Surgery, Keio University School of Medicine
3. Department of Surgery, The Jikei University Kashiwa Hospital
4. Department of Surgery, Shonan Kamakura General Hospital
5. Department of Surgery, Narita Tomisato Tokushukai Hospital
6. Department of Surgery, Saitama Municipal Hospital
7. Department of Surgery, Tokyo Medical and Dental University
8. Department of Cardiovascular Surgery, Kawasaki Medical School
9. Department of Vascular Surgery, Tsuchiura Kyodo General Hospital
10. Department of Vascular Surgery, Saiseikai Yahata General Hospital
11. Department of Vascular Surgery, Saisekai Yokohamashi Tobu Hospital
12. Department of Surgery, Kawasaki Municipal Hospital
13. Kawasaki Tsurumi Vascular Surgery Clinic
14. Division of Vascular Surgery, Department of Surgery, The Jikei University School of Medicine