1. Department of Surgery, University of Tennessee Medical Center at Knoxville, Knoxville, Tennessee
2. Department of Surgery, University of Michigan, Ann Arbor, Michigan
3. Department of Surgery, University of Missouri–Kansas City, Kansas City, Missouri
4. Department of Surgery, Virginia Tech Carillion School of Medicine, Roanoke, Virginia
5. Departments of Medicine, University of Alberta, Edmonton, Alberta, Canada
6. Mayo Clinic, Rochester, Minnesota
7. University of Louisville, Louisville, Kentucky