?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=GS&rft.aulast=Duarte&rft.au=Duarte%2C+GS&rft.date=26+October+2016&rft.atitle=Botulinum+toxin+type+A+versus+botulinum+toxin+type+B+for+cervical+dystonia&rft.title=Cochrane+Database+of+Systematic+Reviews&rft.volume=10&rft.genre=article