- 1997/10/01 - Professor, The First Department of Internal Medicine, School of Medicine, Fukuoka University
- 1992/01/01 - 1997/09/30 Chief, Department of Internal Medicine, Miyazaki Prefectural Hospital, Miyazaki
- 1982/01/01 - 1991/12/31 Associate chief, Department of Internal Medicine, Miyazaki Prefectural Hospital, Miyazaki
- 1981/04/16 - 1981/12/31 Assistant, Department of Internal Medicine, Miyazaki Medical College
- 1980/08/11 - 1981/04/15 宮崎県立宮崎病院内科副医長
- 1978/07/01 - 1980/06/30 Fellowship in Medical Oncology, Department of Medical Oncology, Roswell Park Memorial Institute, Buffalo, N.Y.
- 1975/07/01 - 1978/06/30 Medical Internship and Residency at Mt. Sinai Hospital Services, City Hospital Center at Elmhurst, N.Y.
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International Gynecologic Cancer Society
, American Association for Cancer Research
, American Society of Clinical Oncology
, European Society for Medical Oncology
, 日本化学療法学会
, 日本医真菌学会
, 日本輸血・細胞治療学会
, 日本肺癌学会
, 日本造血細胞移植学会
, 日本癌学会
, 日本癌治療学会
, 日本乳癌学会
, 日本感染症学会
, 日本血液学会
, 日本リンパ網内系学会
, 日本臨床腫瘍学会
, American Society of Clinical Oncology