[1] Univ Hosp Cleveland, Dept Gen Surg, Colorectal Div, 11100 Euclid Ave, Cleveland, OH 44106 USA
[2] Univ Hosp Cleveland, Dept Gen Surg, Div Colorectal Surg, 11100 Euclid Ave, Cleveland, OH 44106 USA
[3] Cleveland Clin Childrens, Sect Pediat Surg, 9500 Euclid Ave,R3, Cleveland, OH 44195 USA