The Japan Esophageal Society
, The Japanese Gastroenterological Association
, Japan Gastroenterological Endoscopy Society
, The Japan Society of Coloproctology
, Japanese Gastric Cancer Association
, The Japanese Society of Gastroenterology
, The Japanese Society of Clinical Cytology
, The Japanese Society of Pathology
, The Japanese Society of Pathology Consultation System Consultant
, Pathology International Editorial Board