[1] Univ Penn, Perelman Sch Med, Childrens Hosp Philadelphia, Div Plast Surg, Philadelphia, PA 19104 USA
[2] Temple Univ, Sch Med, Div Plast Surg, Childrens Hosp Philadelphia, Philadelphia, PA 19122 USA
[3] Univ Penn, Perelman Sch Med, Hosp Univ Penn, Div Plast Surg, Philadelphia, PA 19104 USA