Carol E. H. Scott-Conner Professor Emeritus of Surgery University of Iowa Carver College of Medicine Iowa City, IA USA Andreas M. Kaiser Professor of Surgery Chief, Division of Colorectal Surgery City of Hope National Medical Center Comprehensive Cancer Center Duarte, CA USA Ninh T. Nguyen Professor and Chair, Department of Surgery University of California, Irvine Orange, CA USA Umut Sarpel Division of Surgical Oncology Department of Surgery Icahn School of Medicine at Mount Sinai New York, NY USA Sonia L. Sugg Professor of Surgery University of Iowa Carver College of Medicine Iowa City, IA USA