1 Department of Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
2 Division of Colon and Rectal Surgery, Department of Surgery, Corporal Michael Crescenz VA Medical Center Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
3 Division of General Surgery, University of Missouri, Harry S. Truman Memorial Veterans’ Hospital, Columbia, Missouri
4 Division of Colorectal Surgery, Department of Surgery, University of Michigan, Ann Arbor, Michigan
5 Colorectal Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
6 Department of Surgery, UT Southwestern Medical Center, Dallas, Texas
Correspondence: Jeffrey L. Roberson, M.D., Department of Surgery, University of Pennsylvania, 3400 Spruce St - Silverstein 4, Philadelphia, PA 19104. E-mail: [email protected]; Lillias H. Maguire, M.D., Division of Colon and Rectal Surgery, Department of Surgery, Corporal Michael Crescenz VA Medical Center Philadelphia, University of Pennsylvania, 3400 Spruce St - Silverstein 4, Philadelphia, PA 19104. E-mail: [email protected]
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