Shigetoshi Urabe1, Yuko Akazawa2, Fuminao Takeshima1. 1. Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan. 2. Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan akazaway@nagasaki-u.ac.jp.