?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=T&rft.au=Upile%2C+T&rft.aulast=Upile&rft.atitle=Unilateral+versus+bilateral+thyroarytenoid+Botulinum+toxin+injections+in+adductor+spasmodic+dysphonia%3A+a+prospective+study&rft.volume=5&rft.date=24+October+2009&rft.issue=20&rft.issn=1746-160X&rft.title=Head+and+Face+Medicine&rft.genre=article