[1] Dept Surg, Div Urol, 1008 S Spring Ave, St Louis, MO 63110 USA
[2] St Louis Univ, Sch Med, 1402 S Grand Blvd, St Louis, MO 63110 USA
[3] SSM Hlth Cardinal Glennon Childrens Hosp, Dept Surg, 1465 S Grand Blvd, St Louis, MO 63110 USA
[4] SSM Hlth Cardinal Glennon Childrens Hosp, Dept Surg, Div Pediat Urol, 1465 S Grand Blvd, St Louis, MO 63110 USA