title: Headache in the emergency department.
authors.affiliation: rwevans@pol.net
authors.forename: Randolph W
authors.initials: RW
authors.lastname: Evans
authors.forename: Benjamin W
authors.initials: BW
authors.lastname: Friedman
mesh_terms: D000328:Adult; D004636:Emergency Service, Hospital / Q000639:trends; D006261:Headache / Q000175:diagnosis / Q000628:therapy*; D006801:Humans; D008297:Male