[1] Childrens Natl Hosp, Div Colorectal & Pelv Reconstruct, 111 Michigan Ave NW, Washington, DC 20010 USA
[2] Childrens Natl Hosp, Dept Surg, Washington, DC USA
[3] Childrens Natl Hosp, Dept Surg Colorectal & Pelv Reconstruct Surg, Washington, DC USA
[4] Childrens Natl Hosp, Dept Urol, Washington, DC USA
[5] Great North Childrens Hosp, Dept Paediat Surg, Newcastle Upon Tyne, England
[6] Seattle Childrens Hosp, Dept Pediat & Thorac Gen Surg, Seattle, WA USA
[7] Childrens Natl Hosp, Dept Colorectal & Pelv Reconstruct, Washington, DC USA
[8] Nationwide Childrens Hosp, Dept Pediat Colorectal & Pelv Reconstruct Surg, Columbus, OH USA