title: Chronic tension-type headache: where are we?
authors.forename: P J
authors.initials: PJ
authors.lastname: Goadsby
mesh_terms: D002908:Chronic Disease; D006801:Humans; D018482:Muscle, Skeletal / Q000503:physiopathology; D019001:Nitric Oxide Synthase / Q000037:antagonists & inhibitors; D018781:Tension-Type Headache / Q000453:epidemiology / Q000503:physiopathology* / Q000628:therapy*
chemical_list: D019001:Nitric Oxide Synthase