1. Department of Health Behavior and Health Education, University of Michigan, Ann Arbor, MI, USA
2. Firearm Injury & Policy Research Program, Harborview Injury Prevention & Research Center, University of Washington, Seattle, WA, USA
3. Social Development Research Group, University of Washington, Seattle, WA, USA
4. Injury Prevention Center, University of Michigan, Ann Arbor, MI, USA
5. Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, USA
6. Youth Violence Prevention Center, University of Michigan School of Public Health, Ann Arbor, MI, USA
7. Prevention Research Center of Michigan, University of Michigan, Ann Arbor, MI, USA
8. Addiction Center, Department of Psychiatry, University of Michigan School of Medicine, Ann Arbor, MI, USA