Affiliation: | 1.Division of Abdominal Imaging/Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02115, USA ;2.Division of Colorectal Surgery/Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02115, USA ; |