1. Department of Thoracic and Cardiovascular Surgery, Matsusaka Chuo General Hospital, Matsusaka, Japan (Presently, Matsusaka Ohta Clinic, Matsusaka, Japan)
2. Department of Vascular Surgery, Takanobashi Central Hospital, Hiroshima, Japan
3. Department of Vascular Surgery, Mitsubishi Mihara Hospital, Mihara, Japan
4. Department of Vascular Surgery, Fukuoka Sanno Hospital, Fukuoka, Japan
5. Department of Cardiovascular Surgery, Kawasaki Medical School, Kurashiki, Japan
6. Department of Surgery, Sendai Hospital of East Japan Railway Company, Sendai, Japan
7. Department of Surgery, Kobe Ekisai-kai Hospital, Kobe, Japan
8. Department of Cardiovascular Surgery, NTT Sapporo Hospital, Sapporo, Japan
9. Department of Surgery, Fujita Health University Banbuntane-hotokukai Hospital, Nagoya, Japan
10. Department of Dermatology, Shimane University Faculty of Medicine, Izumo, Japan
11. Center for Community-Based Health Research and Education (COHRE), Organization for the Promotion of Project Research, Shimane University, Izumo, Japan
12. Department of Vascular Surgery, Rakuwakai Otowa Hospital, Kyoto, Japan