?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Jonathan+Richard&rft.aulast=Pratten&rft.au=Pratten%2C+Jonathan+Richard&rft.title=The+effect+of+chlorhexidine+and+other+antimicrobial+agents+on+the+formation+and+viability+of+oral+bacterial+biofilms&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral&rft.date=1998&rft.tpages=215