[1] Emory Univ, Sch Med, Dept Pediat, Div Emergency Med, Atlanta, GA USA
[2] Emory Univ, Sch Med, Dept Pediat, Childrens Healthcare Atlanta Egleston,Div Crit Ca, Atlanta, GA USA
[3] Emory Univ, Sch Med, Dept Pediat, Div Biostat, Atlanta, GA USA
[4] Childrens Healthcare Atlanta, Dept Pediat Trauma, Dept Pediat, Div Pediat Surg, Atlanta, GA USA
[5] Childrens Healthcare Atlanta Scottish Rite, Pediat Emergency Med Associates, Atlanta, GA USA
[6] Emory Univ, Sch Med, Dept Emergency Med, Atlanta, GA USA