[1] Department of Pediatric Radiology,
[2] Children's Hospital,undefined
[3] University of Geneva,undefined
[4] 6 Rue Willy Donze,undefined
[5] CH-1211 Geneva 14,undefined
[6] Switzerland,undefined
[7] Department of Pediatric Surgery,undefined
[8] Children's Hospital,undefined
[9] University of Geneva,undefined
[10] 6 Rue Willy Donze,undefined
[11] CH-1211 Geneva 14,undefined
[12] Switzerland,undefined