[1] Univ Colorado, Childrens Hosp Colorado, Dept Pediat, Sect Emergency Med,Sch Med, Aurora, CO USA
[2] Univ Colorado, Anschutz Sch Med, Firearm Injury Prevent Initiat, Aurora, CO USA
[3] Univ Colorado, Colorado Sch Publ Hlth, Dept Biostat & Informat, Anschutz Med Campus, Aurora, CO USA
[4] Univ Colorado, Anschutz Sch Med, Div Hosp Med, Aurora, CO USA
[5] Univ Colorado, Sch Med, Dept Emergency Med, Aurora, CO USA
[6] Univ Colorado, Injury & Violence Prevent Ctr, Colorado Sch Publ Hlth, Anschutz Med Campus, Aurora, CO USA