?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=T&rft.au=Lorenc%2C+T&rft.aulast=Lorenc&rft.volume=87&rft.date=1+June+2011&rft.atitle=Promoting+the+uptake+of+HIV+testing+among+men+who+have+sex+with+men%3A+systematic+review+of+effectiveness+and+cost-effectiveness&rft.issue=4&rft.title=Sexually+Transmitted+Infections&rft.issn=1368-4973&rft.pages=272+-+278&rft.genre=article