Institution: | (1) Department of Surgery, Gastroenterological Center, Yokohama City University, 4-57, Urafune-cho, Minami-ku Yokohama, 232-0024, Japan;(2) Department of Gastroenterological Surgery, Yokohama City University School of Medicine, 3-9 Fukuura, Kanazawa-ku Yokohama, 236-0004, Japan |