Millán-Guerrero, R O Subcutaneous histamine versus sodium valproate in migraine prophylaxis: a randomized, controlled, double-blind study. [electronic resource] - European journal of neurology Oct 2007 - 1079-84 p. digital Publication Type: Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 1468-1331 Standard No.: 10.1111/j.1468-1331.2007.01744.x doi Subjects--Topical Terms: AdolescentAdultDouble-Blind MethodFemaleHistamine--administration & dosageHumansInjections, SubcutaneousMaleMiddle AgedMigraine Disorders--drug therapyValproic Acid--administration & dosage