title: Botulinum toxin for treatment of primary chronic headache disorders.
authors.forename: David
authors.initials: D
authors.lastname: Samson
mesh_terms: D054598:Blue Cross Blue Shield Insurance Plans; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D002908:Chronic Disease / Q000188:drug therapy; D017277:Drug Approval; D020773:Headache Disorders / Q000188:drug therapy*; D006801:Humans; D019458:Insurance Coverage; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D019274:Botulinum Toxins, Type A