Affiliation: | (1) Paediatric Radiology, Clinique de Pédiatrie, University Hospital of Geneva, 6 Rue Willy Donzé, CH-1112 Geneva 14, Switzerland, CH;(2) Paediatric Surgery, Clinique de Pédiatrie, University Hospital of Geneva, Geneva, Switzerland, CH;(3) Institute of Pathology, Clinique de Pédiatrie, University Hospital of Geneva, Geneva, Switzerland, CH |