?url_ver=Z39.88-2004&rft_id=10.1007%2Fs10508-010-9623-2&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Wei%2C+Chongyi&rft.aulast=Wei&rft.aufirst=Chongyi&rft.issue=4&rft.volume=40&rft.date=August+2011&rft.issn=0004-0002&rft.atitle=Preference+for+and+Maintenance+of+Anal+Sex+Roles+Among+Men+Who+Have+Sex+with+Men%3A+Sociodemographic+and+Behavioral+Correlates&rft.title=Archives+of+Sexual+Behavior&rft.pages=829+-+834&rft.genre=article