title: Editorial comment.
authors.affiliation: Department of Urology, Division of Pediatric Urology, Vanderbilt University, Nashville, Tennessee.
authors.forename: Douglass B
authors.initials: DB
authors.lastname: Clayton
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D020932:Nerve Growth Factor / Q000652:urine*; D009436:Neural Tube Defects / Q000150:complications*; D019716:Tissue Inhibitor of Metalloproteinase-2 / Q000652:urine*; D053773:Transforming Growth Factor beta1 / Q000652:urine*; D014463:Ultrasonography; D001743:Urinary Bladder / Q000000981:diagnostic imaging*; D001750:Urinary Bladder, Neurogenic / Q000209:etiology*
chemical_list: C560823:TIMP2 protein, human; D053773:Transforming Growth Factor beta1; D019716:Tissue Inhibitor of Metalloproteinase-2; D020932:Nerve Growth Factor