1. Chapman University, Department of Psychology, Orange, California; University of California, Irvine, Center on Stress & Health, Orange, California
2. Children’s Hospital of Orange County, Orange, California
3. Chapman University, Department of Psychology, Orange, California; University of California, Irvine, Center on Stress & Health, Orange, California; University of California, Irvine, Department of Anesthesiology and Perioperative Care, Orange, California
4. University of California, Irvine, Center on Stress & Health, Orange, California; Children’s Hospital of Orange County, Orange, California; University of California, Irvine, Department of Anesthesiology and Perioperative Care, Orange, California; University of California, Irvine, Sue & Bill Gross School of Nursing, Irvine, California
5. University of California, Irvine, Center on Stress & Health, Orange, California; Children’s Hospital of Orange County, Orange, California; University of California, Irvine, Department of Anesthesiology and Perioperative Care, Orange, California; Yale Child Study Center, Yale University, New Haven, Connecticut