- 1990 - 1998 University of Tsukuba Institute of Clinical Medicine
- 1990 - 1998 University of Tukuba, School of Medicine, Associate Professor.
- 1986 - 1990 総合土浦協同病院麻酔科 医長
- 1986 - 1990 Tuchiura Kyodo General Hospital, Chief of Anesthetists.
- 1981 - 1985 University of Tsukuba Institute of Clinical Medicine
- 1981 - 1985 University of Tukuba, School of Medicine, Assistant Professor
- 1977 - 1981 University of Tsukuba University Hospital
- 1977 - 1981 University of Tukuba, Hospital, Senior Resident.
- 1975 - 1977 Sapporo Medical University Hospital
- 1975 - 1977 Sapporo Medical University Hospital, Junior Resident.
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日本NO学会
, 日本心臓血管麻酔学会
, 日本局所麻酔学会
, 米国局所麻酔学会(American Society of Regional Anesthesia)
, 日本集中治療医学会
, 日本ペインクリニック学会
, 日本救急医学会
, 日本臨床麻酔学会
, 日本麻酔科学会
, 世界疼痛学会(World Federation for Study of Pain)
, 国際麻酔研究学会(International Anesthesia Reseach Society)
, 米国麻酔学会(American Society of Anesthesiologist.)