[1] Childrens Hosp Philadelphia, Div Pediat Emergency Med, Philadelphia, PA 19104 USA
[2] Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA
[3] Childrens Hosp Philadelphia, Div Emergency Nursing, Philadelphia, PA 19104 USA
[4] Univ Penn, Sch Nursing, Philadelphia, PA 19104 USA
[5] Childrens Hosp Philadelphia, Philadelphia, PA 19104 USA