He graduated Kyoto University in 1982. 1988-1991 Postgraduate school, Faculty of Medicine, Kyoto University 1991-1994 California Pacific Medical Center, CA, USA 1997: Junior Associate, the Department of Transplant Surgery, Kyoto University 1999: Associate Professor, the Department of Transplant Surgery, Kyoto University 2002: Assistant Professor, Organ Transplant Unit, Kyoto University Hospital 2011: Professor, Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University. 2023: Director General, Hamamatsu Rosai Hospital, Sizuoka, Japan