1. Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka 830‑0011, Japan
2. Division of Rehabilitation, Kurume University Hospital, Kurume, Fukuoka 830‑0011, Japan
3. Department of Gastroenterology and Hepatology, Omuta City Hospital, Omuta, Fukuoka 832‑0077, Japan