1. Center for Child Health, Behavior and Development, Seattle Children’s Research Institute, Seattle, WA, USA
2. Department of Epidemiology, University of Washington, Seattle, WA, USA
3. Harborview Injury Prevention and Research Center, University of Washington, Seattle, WA, USA
4. Department of Pediatrics, University of Washington, Seattle, WA, USA
5. Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, USA