1. Department of Health Behavior and Health Education, University of Michigan School of Public Health; Institute for Firearm Injury Prevention, University of Michigan Ann Arbor MI USA
2. Institute for Firearm Injury Prevention, University of Michigan Ann Arbor MI USA
3. Department of Health Behavior and Health Education University of Michigan School of Public Health, Institute for Firearm Injury Prevention, University of Michigan Ann Arbor MI USA
4. Department of Health Behavior and Health Education University of Michigan School of Public Health Ann Arbor MI USA