- 2009/10 - 現在 Director of the Center for Integrated Medical Research
- 2009/06 - 現在 Keio University School of Medicine Laboratory of Cell and Tissue Biology Professor
- 2007/04 - 2009/05 Keio University School of Medicine Department of Microbiology and Immunology Associate Professor
- 2002/04 - 2007/03 Associate Professor, School of Medicine, Keio University Department of Microbiology and Immunology Associate professor
- 2001/04 - 2002/03 Chief, National Institute for Longevity Sciences Chief
- 1998/11 - 2001/03 Stuff Scientist, Research Institute of Molecular Pathology (IMP), Austria
- 1995/04 - 1998/10 Research Institute of Molecular Pathology (IMP), Austria
- 1992/09 - 1995/03 Institute for Molecular biology, Zurich University, Switzerland
- 1990/04 - 1992/08 Instructor, School of Medicine, Keio University
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International Bone and Mineral Metabolism (IBMS)
, American Society for Bone and Mineral Research (ASBMR)
, The Japanese Society for Bone and Mineral Research