1. Mayerson Center for Safe and Healthy Children, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
2. Department of Family Medicine and Community Health, University of Pennsylvania, Philadelphia, PA, USA
3. Center for Public Health Initiatives, University of Pennsylvania, Philadelphia, PA, USA
4. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA, USA
5. Firearm and Injury Center at Penn, University of Pennsylvania, Philadelphia, PA, USA
6. Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, College of Medicine, Cincinnati, OH, USA
7. Department of Pediatrics, Division of Child & Adolescent Psychiatry, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA