title: Retrograde balloon dilatation for primary pelvi-ureteric stenosis.
authors.forename: S
authors.initials: S
authors.lastname: Ahmed
mesh_terms: D002404:Catheterization; D002648:Child; D002675:Child, Preschool; D006801:Humans; D011643:Publishing; D014517:Ureteral Obstruction / Q000628:therapy*