- 2007 - 現在 Hirosaki University
- 2001 - 2007 Hokkaido University
- 2000 - 2001 市立函館病院 科長
- 2000 - 2001 Hokkaido University, Assistant Professor
- 2001 - - Hokkaido University, Associate Professor
- 1994 - 1999 Hirosaki University
- 1994 - 1999 Hirosaki University, Assistant Professor
- 1999 - Hirosaki University, Associate Professor
- 1986 - 1994 Hirosaki University
- 1986 - 1994 Hirosaki University, Research Assistant
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