title: The effectiveness of spinal manipulation for the treatment of headache disorders: a systematic review of randomized clinical trials.
authors.forename: Howard
authors.initials: H
authors.lastname: Vernon
mesh_terms: D020773:Headache Disorders / Q000628:therapy*; D006801:Humans; D020393:Manipulation, Spinal; D016032:Randomized Controlled Trials as Topic; D012196:Review Literature as Topic