[1] Virginia Commonwealth Univ, Dept Surg, Richmond, VA USA
[2] VCU, Div Pediat Cardiol, Childrens Hosp Richmond, Richmond, VA 23284 USA
[3] VCU, Div Pediat Cardiol, Childrens Hosp Richmond, Div Pediat Orthoped, Richmond, VA USA
[4] Childrens Hosp Richmond VCU, Div Pediat Surg, Richmond, VA USA
[5] VA Commonwealth Univ, Dept Surg, Div Pediat Surg, Childrens Hosp Richmond, 1000 E Broad St, Richmond, VA 23219 USA