（As of June, 2019）
Professor & Chairman, Digestive Diseases Center, Showa Univ. Koto Toyosu Hospital
Director, Itami City Hospital
Professor, Division of Gastroenterology and Hepatology, Toho Univ. Omori Medical Center
Professor, Dept. of Gastroenterology, Fujita Health Univ. Bantane Hospital
Professor & Chairman, Dept. of Gastroenterology, Dokkyo Medical University School of Medicine
Professor & Chairman, Dept. of Gastroenterology, Fukuoka Univ. Chikushi Hospital
Professor & Director, Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine
Director, National Hospital Organization Hakodate National Hospital
Professor & Director, Dept. of Gastrointestinal Endoscopy, Endoscopy Center, Tokyo Medical Univ. Hospital
Professor, Dept. of Internal Medicine, Division of Gastroenterology, Kawasaki Medical School
Professor & Director, Dept. of Endoscopy, Hiroshima Univ. Hospital / Professor, Endoscopy and Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima Univ.
Professor, Osaka Medical College
Professor & Chairman, Dept. of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine
Director, Miyagi Medical Check-up Plaza
Professor, International University of Health and Welfare Graduate School
Professor, Dept. of Internal Medicine, Division of Gastroenterology, Iwate Medical Univ.
Professor & Chairman, Dept.of Gastroenterology, Oita Univ. Faculty of Medicine
Professor & Chairman, Dept. of Medicine, Jichi Medical Univ.
Professor & Chairman, Dept. of Gastroenterological Endoscopy, Kanazawa Medical Univ.
Professor, Division of Gastroenterology and Hepatology, Internal Medicine 3, Kansai Medical Univ.
Professor & Director, Dept. of General and Gastroenterological Surgery, Keio Univ.
Vice President, Nanasawa Rehabilitation Hospital