1. From the University of Michigan Injury Prevention Center (R.M.C., M.A.W., P.M.C.), the Firearm Safety among Children and Teens Consortium (R.M.C., M.A.W., P.M.C.), the Department of Emergency Medicine (R.M.C., P.M.C.), and the Addiction Center, Department of Psychiatry (M.A.W.), University of Michigan School of Medicine, and the Youth Violence Prevention Center (R.M.C., P.M.C.) and Department of Health Behavior and Health Education (R.M.C.), University of Michigan School of Public Health — both in Ann...