1. Department of Vascular Surgery, The University of Tokyo Hospital
2. Vascular Surgery, Department of Surgery, Sanno Medical Center
3. Vascular Center, Sanno Medical Center
4. Vascular Surgery, Nihon University Itabashi Hospital
5. Department of Vascular Surgery, National Hospital Organization Kyusyu Medical Center
6. Department of Vascular Surgery, Saitama Medical Center, Saitama Medical University
7. Department of Vascular Surgery, IUHW Mita Hospital
8. Department of Cardiovascular Surgery, Tokyo Medical University
9. Vascular Surgery, Daiyukai Daiichi Hospital
10. Department of Cardiovascular Surgery, Kawasaki Medical School
11. Department of Cardiovascular Surgery, Nayoro City General Hospital
12. Department of Cardiovascular Surgery, Osaka University
13. Ambulatory Vascular Surgical Clinic Tokyo
14. Center of Vascular Diseases, Edogawa Hospital
15. Cardiovascular Surgery, National Hospital Organization Kanazawa Medical Center
16. Vascular Surgery, Okamura Hospital
17. Sendai Hospital of East Railway Company
18. Cardiovascular Surgery, University of Yamanashi Hospital
19. Department of Cardiovascular Surgery, Hachioji Medical Center