title: Editorial comment.
authors.forename: Thomas F
authors.initials: TF
authors.lastname: Kolon
mesh_terms: D002648:Child; D005109:Extracellular Matrix / Q000473:pathology*; D006801:Humans; D007682:Kidney Pelvis / Q000294:innervation* / Q000473:pathology*; D014513:Ureter / Q000294:innervation* / Q000473:pathology*; D014517:Ureteral Obstruction / Q000473:pathology*