- 2001 - 国立環境研究所 室長
- 2001 - Section Chief, National Institute for Environmental Studies
- 1986 - 国立公衆衛生院 室長
- 1986 - Section Chief, The Institute of Public Health
- 1984 - USEPA Health Effects Research Laboratory 客員研究員
- 1984 - Visiting Researcher, Health Effects Research Laboratory,
- 1982 - 国立公衆衛生院 主任研究員
- 1982 - Senior Researcher, The Institute of Public Health
- 1978 - 国立公衆衛生院 研究員
- 1978 - Researcher, The Institute of Public Health
- 1977 - Tokyo University of Science
- 1977 - Research Associate, Faculty of Science, Science University
- U.S.EPA
- of Tokyo
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廃棄物学会
, 日本食品衛生学会
, 日本産業衛生学会
, 日本癌学会
, 日本環境変異原学会
, 日本環境化学会
, 大気環境学会
, 環境科学会
, Environmental Mutagen Society
, Air & Waste Management Association
, The Food Hygienics Society of Japan
, The Environmental Mutagen Society of Japan
, Society of Environmental Science, Japan
, Japanese Cancer Association
, Japan Society of Waste Management Experts
, Japan Society for Occupational Health
, Japan Society for Environmental Chemistry
, Japan Society for Atmospheric Environment
, Environmental Mutagen Society
, Air & Waste Management Association