title: Is normal pressure hydrocephalus becoming less idiopathic?
authors.affiliation: From the Mayo Clinic, Jacksonville, FL. Graff-radford.neill@mayo.edu.
authors.forename: Neill R
authors.initials: NR
authors.lastname: Graff-Radford
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D006850:Hydrocephalus, Normal Pressure / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D008297:Male; D011859:Radiography; D014652:Vascular Diseases / Q000453:epidemiology*