1979-1982 Resident in General Surgery, Yachiyo Hospital, Anjo, Japan
1982-1983 Resident in Cancer Surgery, Cancer Institute Hospital, Tokyo, Japan
1983-1986 Resident in General Surgery, Daidoh Hospital, Nagoya, Japan
1986-1988 Research Fellow in Cancer Surgery, The First Department of Surgery Nagoya University School of Medicine, Nagoya, Japan
1988-1990 Chief Surgeon in General Surgery, Tohkai Hospital, Nagoya, Japan