- 2006 - Nagasaki University Graduate School of Biomedical Sciences
- 2006 - Lecturer,Infection Research,Infection Research,Graduate School of Biomedical Sciences,Nagasaki University
- 1999 - 2005 Nagasaki University School of Medicine
- 1999 - 2005 Research Associate,School of Medicine,Nagasaki University
- 1998 - 1999 Nippon Medical School
- 1998 - 1999 Research Associate,Nippon Medical University
- 1997 - 1998 国立横浜東病院 その他
- 1997 - 1998 Others
- 1995 - 1997 国立衛生研究所(米国) その他
- 1995 - 1997 Others,National Institute of Health (USA)
- 1994 - 1995 千葉大学医学部付属病院小児科 その他
- 1994 - 1995 Others,Department of Pediatrics, School of Medicine, Chiba uUniversity
- 1993 - 1994 Chiba University School of Medicine
- 1993 - 1994 Others,Department of Pediatrics, School of Medicine, Chiba uUniversity
- 1992 - 1993 千葉大学医学部付属病院小児科 その他
- 1992 - 1993 Others,Department of Pediatrics, School of Medicine, Chiba uUniversity
- 1991 - 1992 千葉県立佐原病院 その他
- 1991 - 1992 Others
- 1992 - Chiba University School of Medicine
- 1992 - Others,Department of Pediatrics, School of Medicine, Chiba uUniversity
- 1989 - 1990 船橋市立医療センター その他
- 1989 - 1990 Others
- 1988 - 1989 Chiba University School of Medicine
- 1988 - 1989 Others,Department of Pediatrics, School of Medicine, Chiba uUniversity
- 1987 - 1988 Metoropolitan Bokutoh Hospital
- 1987 - 1988 Others
- 1988 - 千葉市立海浜病院 その他
- 1988 - Others
- 1986 - 1987 千葉大学医学部付属病院小児科 その他
- 1986 - 1987 Others,Department of Pediatrics, School of Medicine, Chiba University