1. Department of Surgery, University of Colorado, Aurora, Colorado
2. Cedars-Sinai Medical Center, Colorectal Surgery Program, Los Angeles, California
3. Department of Colorectal Surgery, Cleveland Clinic, Cleveland, Ohio
4. Department of Surgery, Northwestern University, Chicago, Illinois
5. Department of Surgery, University of Michigan, Ann Arbor, Michigan
6. Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
7. Washington University, Department of Surgery, St. Louis, Michigan
8. University of Chicago, Department of Surgery, Chicago, Illinois