Affiliation: | (1) Department of Surgery, Tokyo Metropolitan Cancer and Infectious diseases Center, Komagome Hospital, 18-22 Honkomagome 3, Bunkyo-ku, Tokyo 113-8677, Japan;(2) Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious diseases Center, Komagome Hospital, Tokyo, Japan;(3) Department of Endoscopy, Tokyo Metropolitan Cancer and Infectious diseases Center, Komagome Hospital, Tokyo, Japan;(4) Department of Pathology, Tokyo Metropolitan Cancer and Infectious diseases Center, Komagome Hospital, Tokyo, Japan |