Department of Endoscopy, Aichi Cancer Center Hospital,Nagoya 464-8681, Japan
Department of Medical Hepatology, Institute of Liver and Biliary Sciences, New Delhi 110070, India
Department of Gastroenterology, Aichi Cancer Center Hospital, Nagoya 464-8681, Japan Koji Komori, Department of Gastroenterological Surgery, Aichi Cancer Center Hospital, Nagoya 464-8681, Japan