| Institution: | 1. Department of Surgery, The University of Tokushima, Tokushima, Japan;2. Department of Surgery, Kagawa Prefectural Central Hospital, Kagawa, Japan;3. Department of Surgery, Matsuyama Red Cross Hospital, Matsuyama, Japan;4. Department of Surgery, Tokushima Red Cross Hospital, Tokushima, Japan;5. Department of Surgery, Tokushima Prefectural Central Hospital, Tokushima, Japan;6. Department of Surgery, Tokushima Municipal Hospital, Tokushima, Japan;7. Department of Surgery, Yoshinogawa Medical Center, Yoshinogawa, Japan;8. Department of Surgery, National Hospital Organization Kochi National Hospital, Kochi, Japan;9. Department of Surgery, Takamatsu Municipal Hospital, Takamatsu, Japan;10. Department of Surgery, Tokushima Prefecture Naruto Hospital, Tokushima, Japan |
