1. Arrowhead Regional Medical Center, Department of Emergency Medicine, Colton, California; California University of Sciences and Medicine, Colton, California
2. Arrowhead Regional Medical Center, Department of Emergency Medicine, Colton, California
3. Inland Counties Emergency Medical Agency, San Bernardino, California; Riverside County Emergency Services Agency, Riverside, California
4. City of Rialto Fire Department, Rialto, California
5. Arrowhead Regional Medical Center, Department of Surgery, Colton, California; California University of Sciences and Medicine, Colton, California
6. Riverside County Emergency Services Agency, Riverside, California
7. Loma Linda University Medical Center, Department of General Surgery, Loma Linda, California
8. Riverside University Health System Medical Center, Department of Surgery, Moreno Valley, California
9. Alameda County Emergency Medical Services Agency, San Leandro, California