1. Department of Emergency Medicine, UC San Diego, San Diego, California.
2. UC San Diego School of Medicine, San Diego, California.
3. Scripps Mercy Hospital, San Diego, California.
4. San Diego County EMS, San Diego, California.
5. Division of Trauma UC San Diego, San Diego, California.
6. Sharp Memorial Hospital, San Diego, California.
7. Scripps Memorial Hospital, San Diego, California.
8. Palomar Hospital, Escondido, California.