title: Arteriographic study of effect of drugs on intracranial vessels in patients with chronic headache; a preliminary report.
authors.forename: A P
authors.initials: AP
authors.lastname: FRIEDMAN
authors.forename: E
authors.initials: E
authors.lastname: FEIRING
mesh_terms: D000792:Angiography; D001921:Brain; D006261:Headache; D020773:Headache Disorders; D006801:Humans