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Pop-Vicas A, Tacconelli E, Gravenstein S, Lu B, D'Agata EM.Pop-Vicas A, et al.Infect Control Hosp Epidemiol. 2009 Apr;30(4):325-31. doi: 10.1086/596608.Infect Control Hosp Epidemiol. 2009.PMID: 19220162Free PMC article.