1. Department of Psychology, Brigham Young University, UT, USA
2. Department of Psychiatry, University of Utah School of Medicine, UT, USA
3. Department of Pediatrics, The Research Institute at Nationwide Children's Hospital, and The Ohio State University, Columbus, OH, USA
4. Hospital for Sick Children, Toronto, ON, Canada
5. Department of Psychology, University of Toronto, ON, Canada
6. Department of Surgery, University of Toronto, ON, Canada
7. Department of Human Development, University of Maryland, MD, USA
8. MetroHealth Medical Center, Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA