Jae Hwan Oh a , Sung-Bum Kang b, Seung-Yong Jeong c, Byung Ho Nam d, Ji Won Park a
a Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, South Korea
b Department of Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
c Division of Colorectal Surgery, Department of Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
d Center for Clinical Trials, Research Institute and Hospital, National Cancer Center, Goyang, South Korea