Affiliation: | (1) Division of Gastrointestinal Oncology and Digestive Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba, 277-8577, Japan;(2) Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, 880 Kitakobaysashi, Mibu, Shimotuga, Tochigi, 321-0293, Japan;(3) Division of Endoscopy, National Cancer Center Hospital, Tsukiji, Tokyo, 104-0045, Japan |