title: Reply to Dr. R. W. Evans.
authors.forename: D
authors.initials: D
authors.lastname: Mickeviciene
authors.forename: H
authors.initials: H
authors.lastname: Schrader
authors.forename: L J
authors.initials: LJ
authors.lastname: Stovner
authors.forename: T
authors.initials: T
authors.lastname: Sand
mesh_terms: D035061:Control Groups; D006261:Headache / Q000209:etiology; D006801:Humans; D038223:Post-Concussion Syndrome / Q000175:diagnosis / Q000453:epidemiology* / Q000503:physiopathology*; D011446:Prospective Studies; D013997:Time Factors