title: Debate: homeopathy and chronic headache.
mesh_terms: D002908:Chronic Disease; D006261:Headache / Q000628:therapy*; D006705:Homeopathy / Q000379:methods*; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D012107:Research Design / Q000592:standards; D011795:Surveys and Questionnaires