Stevens, Vanessa Cumulative antibiotic exposures over time and the risk of Clostridium difficile infection. [electronic resource] - Clinical infectious diseases : an official publication of the Infectious Diseases Society of America Jul 2011 - 42-8 p. digital Publication Type: Journal Article ISSN: 1537-6591 Standard No.: 10.1093/cid/cir301 doi Subjects--Topical Terms: AdultAgedAged, 80 and overAnti-Bacterial Agents--administration & dosageClostridioides difficileCross Infection--epidemiologyEnterocolitis, Pseudomembranous--epidemiologyFemaleFluoroquinolones--administration & dosageHumansMaleMetronidazole--administration & dosageMiddle AgedMultivariate AnalysisProportional Hazards ModelsRetrospective StudiesRisk Factors