1987-1988 Residency, Department of Surgery II, Kyushu University Hospital, JAPAN 1988-1989 Residency, Department of Surgery, Nippon Steel Yawata Memorial Hospital, Kitakyushu, JAPAN 1989-1990 Medical Staff, Department of Surgery II, Kyushu University Hospital, JAPAN 1990-1991 Instructor, Department of General Surgery, Fukuoka Dental College Hospital, Fukuoka, JAPAN 1991-1994 Medical Staff, Department of Gastroenterologic Surgery, National Kyushu Cancer Center, Fukuoka, JAPAN 1994-1996 Research Fellow in Dana-Farber Cancer Institute, Boston, U.S.A. 1996-1999 Assistant Professor, Department of Surgery II, Faculty of Medicine, Kyushu University, Fukuoka, JAPAN 1999-2001 Director of Department of Surgery, Saga Prefectural Hospital Koseikan, Saga, JAPAN 2001-2002 Assistant Professor, Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, JAPAN 2002-2003 Assistant Professor, Cancer Center, Kyushu University Hospital, Fukuoka, JAPAN 2003-2005 Associate Professor, Center for Integration of Advanced Medicine and Innovative Technology, Kyushu University Hospital, JAPAN 2005-2012 Associate Professor, Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, JAPAN 2012-Present Professor, Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine, Kobe University, Kobe, JAPAN