1) Department of Surgery, Minamata City General Hospital and Medical Center, Kumamoto, Japan
2) Department of Medical Informatics and Administration Planning, Minamata City General Hospital and Medical Center, Kumamoto, Japan
3) Department of Radiology, Minamata City General Hospital and Medical Center, Kumamoto, Japan
4) Department of Nursing, Minamata City General Hospital and Medical Center, Kumamoto, Japan
5) Department of Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto, Japan
6) Department of Medical Quality and Safety Management, Graduate School of Life Sciences, Kumamoto University, Kumamoto, Japan

Yohei Nagai¹⁾, Junichi Yamazawa²⁾, Hideo Takahashi³⁾, Tomomi Nakanoue⁴⁾, Hironobu Shigaki¹⁾, Tomo Horinouchi¹⁾, Michio Abe¹⁾, Yuki Kitano⁵⁾, Hiromitsu Hayashi⁵⁾, Yuji Miyamoto⁵⁾, Yoshifumi Baba⁵⁾, Akira Chikamoto⁶⁾, Masaaki Iwatsuki⁵⁾