- 2000 - Showa University School of Medicine
- 2000 - Showa University School of Medicine
- 2000 - Showa University, Professor
- 2000 - Showa University, Associate Professor
- 1996 - 1999 Kyorin University Faculty of Medicine
- 1996 - 1999 Kyorin University, Associate Professor
- 1991 - 1996 Kyorin University Faculty of Medicine
- 1991 - 1996 Kyorin University, Lecturer
- 1977 - 1991 Kyorin University Faculty of Medicine
- 1977 - 1991 Kyorin University, Research Assistant
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