Affiliation: | Yuya Umebayashi, Masanori Tokunaga, Toshifumi Saito, Yuya Sato, Toshiro Tanioka, Yusuke Kinugasa, Department of Gastrointestinal Surgery, Tokyo Medical and Dental University, Tokyo 113-8519, JapanSatoru Muro, Keiichi Akita, Department of Clinical Anatomy, Tokyo Medical and Dental University, Tokyo 113-8519, Japan |