1. National Clinician Scholars Program, University of California, Los Angeles
2. Olive View, Department of Emergency Medicine, University of California, Los Angeles
3. Alameda Health System, Department of Emergency Medicine, Highland Hospital, Oakland, California
4. University of California, Santa Cruz
5. University of California, Los Angeles
6. Department of Radiological Sciences, Stanford University, Stanford, California
7. Department of Emergency Medicine, University of California, Los Angeles