1. Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan
2. Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
3. Seta Clinic, Tokyo, Japan
4. Department of Next Generation Cell and Immune Therapy, Juntendo University School of Medicine, Tokyo, Japan
5. Medinet Medical Institute, MEDINET Co. Ltd., Yokohama, Japan