The authors are especially grateful to the 60 leading Japanese institutions that kindly took part in the survey.
Aichi Medical University, Department of Surgery; Division of Gastroenterol Surgery
Asahikawa Medical College, Department of Gastroenterological Surgery
Chiba Cancer Center, Department of Gastroenterological Surgery
Chiba Rosai Hospital, Department of Surgery
Fujita Health University School of Medicine, Department of Biliary Pancreatic Surgery
Fukui University, Faculty of Medicine, Department of Surgery I
Higashiosaka City General Hospital, Department of Surgery
Hirosaki University School of Medicine, Department of Surgery II
Hiroshima City Hospital, Department of Surgery
Hyogo College of Medicine, Department of Surgery 1
Ikuwakai Memorial Hospital, Department of Surgery
Ise Municipal General Hospital, Department of Surgery
Iwate Medical University School of Medicine, Department of Surgery
Jichi Medical University, Department of Surgery
Jikei University School of Medicine, Department of Surgery
Jikei University School of Medicine, Aoto Hospital, Department of Surgery
Jikei University, Daisan Hospital, Department of Surgery
Jikei University, Kashiwa Hospital, Department of Surgery
Kagawa University, Faculty of Medicine, Department of Gastroenterological Surgery
Kainan Hospital Aichi Prefectural Welfare Federation of Agricultural Cooperatives, Department of Surgery
Kitakyushu Municipal Medical Center, Department of Surgery
Kitasato University School of Medicine, Department of Surgery
Kobe City Medical Center General Hospital, Department of Surgery
Kobe University Graduate School of Medicine, Department of Hepato-Billiary-Pancreatic Surgery
Kurume University School of Medicine, Department of Surgery
Kyorin University School of Medicine, Department of Surgery
Kyushu University, Faculty of Medicine, Department of Surgery I
Matsusaka City Hospital, Department of Surgery
Meiwa Hospital, Department of Surgery
Miyazaki University School of Medicine, Department of Surgical Oncology and Regulation of Organ Function
Nagasaki University Graduate School of Medicine, Department of Gastroenterological Surgery
Nagoya City University Graduate School of Medical Sciences, Department of Gastroenterological Surgery
Nagoya University Graduate School of Medicine, Department of Gastroenterological Surgery
Nara Medical University, Department of Surgery
National Cancer Center Hospital East, Department of Upper Abdominal Surgery
National Kyushu Cancer Center, Department of Surgery
National Kyushu Medical Center, Department of Surgery
Nihon University School of Medicine, Division of Digestive Surgery
Niigata Prefectural Central Hospital, Department of Surgery
Niigata University School of Medicine, Department of Surgery
Nippon Medical School, Department of Surgery I
Okayama University Graduate School of Medicine, Department of Gastroenterological surgery transplant and Surgical Oncology
Osaka City University Graduate School of Medicine, Department of Hepato-Billiary-Pancreatic Surgery
Osaka City University Graduate School of Medicine, Department of Surgical Oncology
Osaka Rosai Hospital, Department of Surgery
Osaka University Graduate School of Medicine, Department of Gastroentelogical Surgery
Sapporo Medical University, Department of Surgery I
Sapporo-Kosei general Hospital, Department of Surgery
Shinshu University School of Medicine, Department of Surgery
Showa University School of Medicine, Department of Surgery
St. Marianna University School of Medicine, Department of Surgery
St. Marianna University, Yokohama City Seibu Hospital, Department of Surgery
Teikyo University Chiba Medical Center, Department of Surgery
Tochigi Cancer Center, Department of Surgery
Toho University Ohashi Medical Center, Department of Surgery III
Tokyo Medical University, Department of Surgery
Tokyo Women’s Medical University Medical Center East, Department of Surgery
Tokyo Women’s Medical University, Institute of Gastroenterology, Department of Gastroenterological Surgery
Wakayama Medical University, Department of Gastroenterological Surgery
Yamaguchi University Graduate School of Medicine, Department of Digestive Surgery and Surgical Oncology.