1. Department of Surgery, Fukuoka Sanno Hospital
2. Toyonaga Clinic
3. Department of Surgery, Iizuka Hospital
4. Department of Gastroenterological Surgery, Fukuoka University
5. Department of Surgery and Oncology, Kyushu University
6. Department of Surgery, Saga University
7. Department of Surgery 1, University of Occupational and Environmental Health
8. Department of Gastroenterology, Fukuoka Sanno Hospital
9. Department of Pathology, Fukuoka Sanno Hospital