[1] Childrens Hosp Philadelphia, Ctr Injury Res & Prevent, Philadelphia, PA USA
[2] Univ Penn, Perelman Sch Med, Dept Pediat, Div Emergency Med, Philadelphia, PA USA
[3] Childrens Hosp Philadelphia, Ctr Autism Res, Philadelphia, PA USA
[4] Univ Penn, Dept Psychiat, Perelman Sch Med, Philadelphia, PA USA
[5] Univ Penn, Sch Nursing, Dept Family & Community Hlth, Philadelphia, PA USA
[6] Univ Penn, Perelman Sch Med, Dept Pediat, Div Pediat, Philadelphia, PA USA
[7] Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA USA
[8] Childrens Hosp Philadelphia, Ctr Injury Res & Prevent, 2716 South St,13th Floor, Philadelphia, PA 19146 USA