1. Department of Surgery, The University of Virginia Health System, Charlottesville, Virginia.
2. Department of Surgery, University of Toronto, Toronto, Ontario, Canada.
3. Department of Surgery, University of North Texas John Peter Smith Hospital, Fort Worth, Texas.
4. Department of Surgery, University of Washington, Seattle, Washington.
5. Department of Surgery, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
6. Department of Surgery, Abrazo West Campus, Goodyear, Arizona.
7. Department of Surgery, Washington University, St. Louis, Missouri.
8. Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts.
9. Department of Surgery, University of Michigan, Ann Arbor, Michigan.
10. Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida.
11. Department of Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina.
12. Department of Surgery, University of California, San Diego, San Diego, California.
13. Department of Surgery, University of California Davis Medical Center, Sacramento, California.
14. Department of Surgery, University of Minnesota Medical School, Minneapolis, Minnesota.