1. UCI Center on Stress & Health; School of Medicine; University of California-Irvine; Irvine CA USA
2. Department of Anesthesiology and Perioperative Care; University of California-Irvine; Irvine CA USA
3. Department of Pediatrics; Children's Hospital of Orange County; Orange CA USA
4. Yale Child Study Center; Yale University School of Medicine; New Haven CT USA
5. Department of Anesthesiology and Perioperative Medicine; Stanford University School of Medicine; Stanford CA USA
6. Departments of Surgery and Anesthesiology; Children's Hospital Colorado; University of Colorado School of Medicine; Aurora CO USA
7. Keck School of Medicine; Departments of Anesthesiology, Pediatrics and Psychiatry & Behavioral Sciences; University of Southern California; Children's Hospital Los Angeles; Los Angeles CA USA
8. Department of Pediatric Psychology; Children's Hospital of Orange County; Orange CA USA