Affiliation: | (1) Department of Surgery, Massachusetts General Hospital, Harvard Medical School, 15 Parkman Street, WACC 460, Boston, MA 02114, USA;(2) Department of Medicine, Gastrointestinal Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA;(3) Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea; |