1. Department of Emergency Medicine, University of California, San Diego, San Diego, CA
2. Mammoth Lakes, CA
3. Department of Emergency Medicine, University of Colorado, Aurora, CO
4. Mammoth Hospital, San Diego Fire-Rescue Department, San Diego, CA
5. Yale School of Medicine, New Haven, CT
6. Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Diego, San Diego, CA
7. Larner College of Medicine, University of Vermont, Burlington, VT