1Yokohama City University,
2Department of General Thoracic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
3Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
4Department of Thoracic Surgery, Jichi Medical University, Tochigi, Japan
5Department of Cardiac Surgery, The University of Tokyo Hospital, Tokyo, Japan
6Department of Cardiovascular Surgery, National Cerebral and Cardiovascular Center, Osaka, Japan
7Department of General Surgical Science, Graduate School of Medicine, Gunma University, Gunma, Japan
8Department of Cardiovascular Surgery, Sakura Medical Center, Toho University, Chiba, Japan.
9Department of Cardiovascular Surgery The Heart Institute of Japan, Tokyo Women’s Medical University, Tokyo, Japan
10Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Miyagi, Japan
11Toho University
12Department of Cardiovascular Surgery, Keio University, Tokyo, Japan
13Second Department of Surgery, University of Occupational and Environmental Health, Fukuoka, Japan
14Department of Cardiovascular Surgery, Kawasaki Medical School, Okayama, Japan
15Department of Gastroenterological Surgery, National Kyushu Cancer Center, Fukuoka, Japan
16Department of Cardiothoracic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
17Department of Cardiovascular Surgery, Nihon University Hospital, Tokyo, Japan
18Department of General Thoracic Surgery, Faculty of Medicine, Kagawa University, Kagawa, Japan
