| Affiliation: | 1.Department of Surgery and Center for Health Ethics,University of Missouri,Columbia,USA;2.Department of Surgery,Duke Regional Hospital and Duke University,Durham,USA;3.Department of Surgery,Lahey Clinic,Burlington,USA;4.Department of Surgery,University of Southern California,Los Angeles,USA;5.Department of Surgery,University of Texas Houston,Houston,USA;6.Department of Surgery,St Luke’s University Health System,Allentown,USA;7.Department of Surgery,Columbia University,New York,USA;8.Department of Surgery,Southern Illinois University,Springfield,USA |
