1. University of California, San Francisco, Section of Pediatric Emergency Medicine, Department of Emergency Medicine, San Francisco, California
2. University of California, San Francisco, Department of Pediatrics, San Francisco, California
3. University of California, San Francisco, Section of Pediatric Emergency Medicine, Department of Emergency Medicine, San Francisco, California; University of Utah, Division of Emergency Medicine, Department of Pediatrics, Salt Lake City, Utah
4. Muhimbili National Hospital, Department of Emergency Medicine, Dar Es Salaam, Tanzania
5. University of California, San Francisco, Department of Medicine, Clinical Pharmacology Program, San Francisco, California; University of California, San Francisco, Department of Emergency Medicine, San Francisco, California
6. University of California, San Francisco, Department of Emergency Medicine, San Francisco, California