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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.
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.