Japan Society of Clinical Trials and Research
, The Japanese Society of Hereditary Tumors
, The Japan Photodynamic Association
, The Japanese Society of Colon Examination
, The Japanese Society of Gastroenterological Cancer Screening
, The Japanese Gastroenterology Association
, Japanese Society of Medical Oncology
, Japan Society of Clinical Oncology
, Japan Gastroenterological Endoscopy Society
, The Japanese Society of Gastroenterology
, The Japanese Society of Internal Medicine