title: Persistent reactivity of patent ductus with a review of the mechanism of spontaneous closure.
mesh_terms: D001241:Aspirin / Q000627:therapeutic use; D006328:Cardiac Catheterization; D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000188:drug therapy / Q000503:physiopathology* / Q000601:surgery; D005260:Female; D006337:Heart Murmurs; D006801:Humans
chemical_list: D001241:Aspirin