- 1983 - 1987 Toho University Faculty of Medicine
- 1983 - 1987 associate professor of the School of Medicine,
- 1987 - - 東邦大学医学部 教授
- 1987 - - Professor of the School of Medicine, Toho
- 1985 - 1986 南カリフォルニア大学メディカルセンター勤務
- 1985 - 1986 Climical fellow of USC Medical Center
- 1978 - 1983 Toho University Faculty of Medicine
- 1978 - 1983 assistant professor of the School of Medicine
- 1978 - 1980 Wisconsin大学臨床腫瘍センター 研究員
- 1978 - 1980 Research associate of Wisconsin Clinical
- 1975 - 1977 Jichi Medical University
- 1975 - 1977 assistant professor of the Jichi Medical
- University
- Cancer Center
- Toho University
- School
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