1 Children's Mercy- Kansas City, Comprehensive Colorectal Center, Division of Pediatric Surgery, Kansas City, MO, USA; University of Missouri - Kansas City, Kansas City, MO, USA. Electronic address: rrentea@cmh.edu.
2 Children's Mercy- Kansas City, Comprehensive Colorectal Center, Division of Pediatric Surgery, Kansas City, MO, USA; University of Missouri - Kansas City, Kansas City, MO, USA; Children's Mercy- Kansas City, Division of Pediatric Gastroenterology, Kansas City, MO, USA.