- 2004 - Kumamoto University University Hospital
- 2004 - Lecturer, ,University Hospital ,Kumamoto University
- 1990 - 2003 講師
- 1990 - 2003 Lecturer,
- 1989 - 1990 助手
- 1989 - 1990 Research Associate,
- 1988 - 1989 Kumamoto University
- 1988 - 1989 Research Associate,Kumamoto University
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