Affiliation: | Tomohiko Yasuda, Komei Kuge, Hiroki Arai, Daisuke Kakinuma, Masanori Watanabe, Hideyuki Suzuki, Department of Gastrointestinal Surgery, Nippon Medical School Chiba Hokusoh Hospital, Chiba 270-1694, JapanNobuyuki Sakurazawa, Hiroshi Yoshida, Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, Tokyo 113-8603, JapanJun Omori, Katsuhiko Iwakiri, Department of Gastroenterology, Nippon Medical School, Tokyo 113-8603, Japan |