title: Of Zebras and CDH.
authors.forename: Henry
authors.initials: H
authors.lastname: Lightcap
mesh_terms: D002908:Chronic Disease; D004345:Drug Industry; D020773:Headache Disorders / Q000453:epidemiology* / Q000628:therapy; D006801:Humans; D012008:Recurrence; D014481:United States / Q000453:epidemiology