1. Department of Surgery, Harbor-UCLA (University of California, Los Angeles) Medical Center, Torrance
2. Los Angeles BioMedical Research Institute, Torrance, California
3. Department of Surgery, University of California–Davis, Sacramento
4. Department of Surgery, Loma Linda University, Loma Linda, California
5. Department of Surgery, University of Southern California, Los Angeles
6. Department of Surgery, Central Iowa Health System, Iowa Methodist Medical Center, Des Moines
7. Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
8. Department of Surgery, University of Nebraska Medical Center, Omaha
9. Department of Surgery, Columbia University, New York, New York
10. Department of Surgery, York Hospital, York, Pennsylvania
11. Department of Surgery, University of Texas Health Science Center at San Antonio
12. Department of Surgery, UCLA, Los Angeles, California
13. Department of Surgery, Santa Barbara Cottage Hospital, Santa Barbara, California
14. Department of Surgery, Mount Carmel Health System, Columbus, Ohio
15. Department of Surgery, University of California, San Diego, San Diego
16. Department of Surgery, Gundersen Lutheran Medical Foundation, La Crosse, Wisconsin
17. Department of Surgery, Stanford University, Palo Alto, California
18. Department of Surgery, Southern Illinois University School of Medicine, Springfield
19. Department of Surgery, University of Pennsylvania, Philadelphia
20. Department of Surgery, University of Colorado, Denver, Aurora
21. Department of Surgery, University of California, Irvine, Irvine
22. Department of Surgery, University of San Francisco at Fresno, Fresno, California
23. Department of Emergency Medicine, Harbor-UCLA Medical Center, Torrance, California