We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEfficacy of botulinum toxin type A in new daily persistent headache.AuthorsSpears RCPublicationThe journal of headache and pain, 2008, Vol 9, Issue 6, p405ISSN1129-2369Publication typearticleDOI10.1007/s10194-008-0078-y