Yokohama City University( M.D. 1990)
Yokohama City University (Ph.D 1994)
Saiseikai Yokohama-Ciry Nanbu Hospital(1994-1996)
Kanagawa Asigara-kami Hoapital(1996-1998)
Kanagawa Heart-Lung Hoapital(1998-2000)
Yokohama City University Center Hospital (2000-