1. Department of Emergency Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
2. Suzanne Dworak-Peck School of Social Work, University of Southern California, Los Angeles, California
3. Los Angeles County EMS Agency, Los Angeles, California
4. Harbor-UCLA Medical Center Department of Emergency Medicine and the Lundquist Institute for Biomedical Innovation, Los Angeles, California
5. David Geffen School of Medicine at UCLA, Los Angeles, California