title: A probability model of headache recurrence.
mesh_terms: D000328:Adult; D005260:Female; D006261:Headache / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008390:Markov Chains; D008954:Models, Biological; D011336:Probability; D012008:Recurrence; D012737:Sex Factors