- 1998 - 2000 Kanagawa University
- 1998 - 2000 Kanagawa University,
- 1995 - 2000 Tokyo Medical and Dental University College of Liberal Arts and Sciences
- 1995 - 2000 College of Liberal Arts and Sciences,
- 1997 - 1998 Yokohama National University
- 1997 - 1998 Yokohama National University,
- 1996 - 1998 Waseda University
- 1996 - 1998 Waseda University,
- 1998 - - 早稲田大学 非常勤講師
- 1998 - - Waseda University,
- Research Assistant
- Part-time Lecturer
- Tokyo Medical and Dental University,
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