[1] Northwestern Univ, Feinberg Sch Med, Ann & Robert H Lurie Childrens Hosp Chicago, Dept Pediat,Div Emergency Med, Chicago, IL 60611 USA
[2] Northwestern Univ, Feinberg Sch Med, Ann & Robert H Lurie Childrens Hosp Chicago, Dept Pediat,Div Crit Care Med, Chicago, IL 60611 USA
[3] Northwestern Univ, Feinberg Sch Med, Dept Prevent Med Hlth & Biomed Informat, Chicago, IL 60611 USA
[4] Univ Pittsburgh, Sch Med, UPMC Childrens Hosp Pittsburgh, Dept Crit Care Med, Pittsburgh, PA USA
[5] Northwestern Univ, Feinberg Sch Med, Ann & Robert H Lurie Childrens Hosp Chicago, Dept Pediat,Data Analyt & Reporting, Chicago, IL 60611 USA