title: [Controlled clinical trials of drugs for use in the prophylaxis of migraine].
mesh_terms: D002986:Clinical Trials as Topic; D004341:Drug Evaluation; D006801:Humans; D008881:Migraine Disorders / Q000517:prevention & control*; D010919:Placebos; D012107:Research Design; D013997:Time Factors
chemical_list: D010919:Placebos