- 2000 - 2001 Nippon Medical School
- 2000 - 2001 Nippon Medical School, Research Assistant
- 1994 - 1995 山梨医科大学 医学研究生
- 1994 - 1995 Yamanashi Medical University, Medical Resercher
- 1992 - 1994 中国吉林医学院附属病院 講師
- 1992 - 1994 Affiliated Hospital, JiLin Medical College, China, Lecturer
- 1984 - 1992 中国吉林医学院附属病院 助手
- 1984 - 1992 Affiliated Hospital, JiLin Medical College, China, Research Assistant
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