[1] Childrens Hosp Philadelphia, Div Urol, Dept Surg, Philadelphia, PA USA
[2] Univ Penn, Perelman Sch Med, Dept Biostat Epidemiol & Informat, Philadelphia, PA USA
[3] Childrens Hosp Philadelphia, Appl Clin Res Ctr, Philadelphia, PA USA
[4] Childrens Hosp Colorado, Div Urol, Dept Surg, Aurora, CO USA
[5] Nationwide Childrens Hosp, Dept Pediat Urol, Columbus, OH USA
[6] Nemours Childrens Hlth, Dept Surg, Div Urol, Wilmington, DE USA
[7] Cincinnati Childrens Hosp & Med Ctr, Div Urol, Dept Surg, Cincinnati, OH USA
[8] Seattle Childrens Hosp, Div Urol, Dept Surg, Seattle, WA USA
[9] Childrens Hosp Philadelphia, Dept Pediat, Philadelphia, PA USA
[10] Childrens Wisconsin & Med Coll Wisconsin, Dept Urol, Milwaukee, WI USA