?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=I&rft.au=Schlackow%2C+I&rft.aulast=Schlackow&rft.atitle=Surveillance+of+infection+severity%3A+a+registry+study+of+laboratory+diagnosed+Clostridium+difficile&rft.volume=9&rft.date=July+2012&rft.issue=7&rft.title=PLoS+Med&rft.pages=%3F-+%3F&rft.issn=1549-1277&rft.genre=article