- 1998 - 1999 Taiho Pharmaceutical Co., Ltd.
- 1998 - 1999 Hanno Research Center,
- 1999 - -
- 1999 - - Institute for Chemotherapy, M.C.R.F.,
- 1992 - 1998 Taiho Pharmaceutical Co., Ltd.
- 1992 - 1998 Tokushima Research Center,
- Recearcher
- Taiho Pharmaceutical Co., Ltd., Recearcher
- Taiho Pharmaceutical co., Ltd., Researcher
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