We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleBotulinum toxin type A and divalproex sodium for prophylactic treatment of episodic or chronic migraine.AuthorsBlumenfeld AM; Schim JD; Chippendale TJPublicationHeadache, 2008, Vol 48, Issue 2, p210ISSN0017-8748Publication typearticleDOI10.1111/j.1526-4610.2007.00949.x