[1] Univ Maryland, Sch Med, Dept Pediat, N5W70,22 S Greene St, Baltimore, MD 21210 USA
[2] Univ Maryland, Sch Med, Baltimore, MD 21210 USA
[3] Univ Maryland, Sch Med, Dept Pediat, Div Gen Pediat, Baltimore, MD 21210 USA
[4] Univ Maryland, Sch Med, Dept Pediat, Div Neonatol, Baltimore, MD 21210 USA
[5] Univ Maryland, Sch Med, Dept Emergency Med, Baltimore, MD 21210 USA
[6] Univ Maryland, Sch Med, Div Pediat Emergency Med, Dept Pediat, Baltimore, MD 21210 USA
[7] Univ Maryland, Sch Med, Div Pediat Emergency Med, Dept Internal Med, Baltimore, MD 21210 USA
[8] Univ Maryland, Sch Med, Div Gen Internal Med, Dept Pediat, Baltimore, MD 21210 USA
[9] Univ Maryland, Sch Med, Div Gen Internal Med, Dept Internal Med, Baltimore, MD 21210 USA