1. Department of Emergency Medicine, CHOC Children's, Orange, CA;
2. Department of Emergency Medicine, University of California, Irvine, CA;
3. University of Pittsburgh School of Medicine, Pittsburgh, PA;
4. University of California, Irvine, School of Medicine, Irvine, CA;
5. Department of Information Systems, CHOC Children's, Orange, CA;
6. CHOC Children's, Orange, CA;
7. Center on Stress & Health, University of California, Irvine, Irvine, CA;
8. Department of Anesthesiology and Perioperative Care, University of California, Irvine, CA;
9. School of Computational and Data Sciences, Chapman University, Orange, CA;
10. Department of Pediatrics, CHOC Children's, Orange, CA; and