- 2014/04 - 現在 Jichi Medical University Emeritus Professor
- 1999/04 - 2014/03 - 自治医科大学 教授
- 1993 - 1999 The University of Tokyo
- 1993 - 1999 University of Tokyo, Associate Professor
- 1999 - - Jichi Medical School, Professor
- 1988 - 1993 The University of Tokyo
- 1988 - 1993 University of Tokyo, Assistant Professor
- 1979 - 1985 Hamamatsu University School of Medicine
- 1979 - 1985 Hamamatsu University School of Medicine,
- 1978 - 1979 Hamamatsu University School of Medicine
- 1978 - 1979 Hamamatsu University, School of Medicine,
- 1974 - 1977 The University of Tokyo
- 1974 - 1977 University of Tokyo, Assistant
- Assistant Professor
- Assistant
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日本小児耳鼻咽喉科学会
, 日本頭頸部外科学会
, 日本口腔咽頭科学会
, 日本鼻科学会
, 日本気管食道科学会
, 日本耳鼻咽喉科学会
, Japan Society of Immunology and Allergology in Otolaryngology
, The Japan Laryngological Association
, The Society of Practical Otolaryngology
, Japan Society of Stomato-Pharyngology
, Otologic Society of Japan
, Japan Society for Pediatric Otorhinolaryngology
, Japan Society for Head and Neck Surgery
, Japan Rhinologic Society
, Japan Broncho-esophageal Society
, The Oto-Rhino-laryngological Society of Japan
, 耳鼻咽喉科漢方研究会
, THE JAPAN SOCIETY FOR ORIENTAL MEDICINE