1. Graduate School of Informatics, Nagoya University, Nagoya, Japan
2. Information Strategy Office, Information and Communications, Nagoya University, Nagoya, Japan
3. Department of Gastroenterological Surgery, Fukuoka University Faculty of Medicine, Fukuoka, Japan
4. Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
5. Information Technology Center, Nagoya University, Nagoya, Japan
6. Research Center for Medical Bigdata, National Institute of Informatics, Tokyo, Japan