[1] Univ Penn, Div Plast & Reconstruct Surg, Childrens Hosp Philadelphia, Perelman Sch Med, Philadelphia, PA 19104 USA
[2] Childrens Hosp Philadelphia, Div Plast & Reconstruct Surg, Philadelphia, PA 19104 USA
[3] Childrens Hosp Philadelphia Stream Studios, Philadelphia, PA USA
[4] Assoc Companero Cirugia, Guatemala City, Guatemala
[5] GlaxoSmithKline, Res & Dev Dept, Philadelphia, PA USA
[6] Univ Penn, Dept Anesthesiol & Crit Care Med, Childrens Hosp Philadelphia, Perelman Sch Med, Philadelphia, PA 19104 USA