title: Re: Failed pyeloplasty in children: revisiting the unknown.
authors.forename: Douglas A
authors.initials: DA
authors.lastname: Canning
mesh_terms: D006801:Humans; D006869:Hydronephrosis / Q000151:congenital* / Q000601:surgery*; D021782:Multicystic Dysplastic Kidney / Q000601:surgery*; D014517:Ureteral Obstruction / Q000601:surgery*; D013520:Urologic Surgical Procedures / Q000379:methods*