1. Colon and Rectal Surgery, JFK Medical Center, Atlantis, Florida, United States
2. University of Miami – Palm Beach Consortium, JFK Medical Center, Atlantis, Florida United States
3. Georgia Colon and Rectal Surgical Associates, Atlanta, Georgia, United States
4. Minnesota Colon & Rectal Surgical Specialists, Minneapolis, Minnesota, United States
5. Beth Israel Deaconess Medical Center, Boston, Massachusetts, United Stqates
6. University of Virginia, Charlottesville, Virginia, United States
7. Rush University Medical Center, Chicago, Illinois, United States
8. Orange County Colorectal Clinic, Mission Viejo, California, United States
9. University of Rochester Medical Center, Rochester, New York, United States
10. University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States
11. Colon and Rectal Surgery of New York, Huntington, New York, United States
12. Massachusetts General Hospital, Boston, Massachusetts, United States
13. University Colorectal Surgery Associates, Louisville, Kentucky, United States