1. Department of Vascular Surgery, Fukuoka Higashi Medical Center
2. Department of Vascular Surgery, Kokura Memorial Hospital
3. Department of Vascular Surgery, Steel Memorial Yawata Hospital
4. Department of Surgery, Hiroshima Red Cross Hospital and Atomic-Bomb Survivors’ Hospital
5. Department of Vascular Surgery, Matsuyama Red Cross Hospital
6. Division of Vascular Surgery, Department of Surgery, Nagoya University Graduate School of Medicine
7. Department of Vascular Surgery, Saiseikai Yahata General Hospital