[1] Childrens Hosp Philadelphia, Dept Gen Thorac & Fetal Surg, Philadelphia, PA USA
[2] Hosp Univ Penn, Philadelphia, PA USA
[3] Childrens Hosp Philadelphia, Dept Pediat, Div Emergency Med, Philadelphia, PA USA
[4] Univ Penn, Perelman Sch Med, Philadelphia, PA USA
[5] Childrens Hosp Philadelphia, Dept Radiol, Philadelphia, PA USA