title: [Ferrum quartz in the prevention of migraine. A double-blind study].
mesh_terms: D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D006801:Humans; D007501:Iron / Q000627:therapeutic use*; D008875:Middle Aged; D008881:Migraine Disorders / Q000517:prevention & control*; D010919:Placebos; D011897:Random Allocation
chemical_list: D010919:Placebos; D007501:Iron
vernacular_title: Ferrumkvarts som profylaktikum ved migraene. En dobbeltblind undersøgelse.