1. Department of Gastroenterology, Oita San-ai Medical Center, Oita, Japan
2. Pancreatic Cancer Research for Secure Salvage Young Investigators (PASSYON), Osaka-Sayama, Japan
3. Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
4. Department of Gastroenterology, Tenri Hospital, Nara, Japan
5. Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, Tokyo, Japan
6. Department of Gastroenterology, Oita Red Cross Hospital, Oita, Japan
7. Department of Gastroenterology, Faculty of Medicine, Oita University, Oita, Japan
8. Department of Gastroenterology, Narita Memorial Hospital, Aichi, Japan
9. Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India
10. Department of Endoscopy, Urawa Kyosai Hospital, Saitama, Japan