Predictors of outcome in headache patients presenting to family physicians--a one year prospective study. The Headache Study Group of The University of Western Ontario.
D000293:Adolescent; D000328:Adult; D000368:Aged; D006261:Headache / Q000503:physiopathology* / Q000523:psychology / Q000628:therapy; D006801:Humans; D008875:Middle Aged; D011379:Prognosis; D011446:Prospective Studies