Steele's colon and rectal surgery / senior editor, Scott R. Steele, MD, MBA, Professor of Surgery, Cleveland Clinic Lener College of Medicine of Case Western Reserve University, Chairman, Department of Colorectal Surgery, rupert B. Turnbull MD, Endowed Chair in Colorectal Surgery, Cleveland Clinic, Cleveland, Ohio, section editors, Justin A. Maykel, MD, Professor of Surgery, Joseph M. Streeter and Mary Streeter Defeudis Endowed Chair in Surgery, Chief, Division of Colorectal Surgery, UMass Memorial Medical Center, Worcester, Massachusetts, Amy L. Lightner, MD, Director, Center for Regenerative Medicine and Surgery, Associate Professor of Colorectal Surgery, Digestive Disease Institute, Associate Professor of Inflammation and Immunity, Lerner Research Institute, Core Member in the Center for Immunotherapy, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio, Joshua I.S. Bleier, MD, FACS, FASCRS, Professor of Surgery, Perelman School of Medicine at the University of Pennsylvania, Vice-Chair, Department of Surgery, Pennsylvania Hospital, Program Director, Colorectal Fellowship, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.