1. Department of Surgery, Harbor-UCLA (University of California, Los Angeles) Medical Center, Torrance
2. Los Angeles Biomedical Research Institute, Harbor-UCLA Medical Center, Torrance
3. Department of Emergency Medicine, Harbor-UCLA Medical Center, Torrance
4. Department of Surgery, University of California, San Francisco, Fresno
5. Department of Surgery, University of Washington Medical Center, Seattle
6. Department of Surgery, Cedars Sinai Medical Center, Los Angeles, California
7. Department of Surgery, UCLA Health, Los Angeles
8. Department of Surgery, New York Presbyterian/Columbia University Medical Center, New York
9. Gunderson Medical Foundation, Gundersen Health System, La Crosse, Wisconsin
10. Department of Surgery, University of Southern California, Los Angeles
11. Department of Surgery, Stanford University Medical Center, Palo Alto, California
12. Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia
13. Department of Surgery, University of California, Irvine, Medical Center, Orange
14. Department of Surgery, Loma Linda University Health, Loma Linda, California
15. Department of Surgery, Santa Barbara Cottage Hospital, Santa Barbara, California
16. Department of Surgery, University of California, Davis, School of Medicine, Sacramento
17. Department of Surgery, Iowa Methodist Medical Center, Des Moines
18. Department of Surgery, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu
19. Department of Surgery, WellSpan York Hospital, York, Pennsylvania
20. Department of Surgery, Southern Illinois School of Medicine, Springfield
21. Department of Surgery, University of Texas at San Antonio Health Center, San Antonio