title: Re: chronic daily headache in children and adolescents presenting to tertiary headache clinics.
authors.forename: Marcelo E
authors.initials: ME
authors.lastname: Bigal
authors.forename: Richard B
authors.initials: RB
authors.lastname: Lipton
authors.forename: Stephen D
authors.initials: SD
authors.lastname: Silberstein
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D020773:Headache Disorders / Q000145:classification / Q000175:diagnosis*; D006801:Humans; D018710:Pain Clinics / Q000706:statistics & numerical data*