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Otter JA, Puchowicz M, Ryan D, Salkeld JA, Cooper TA, Havill NL, Tuozzo K, Boyce JM.Otter JA, et al.Infect Control Hosp Epidemiol. 2009 Jun;30(6):574-7. doi: 10.1086/597544.Infect Control Hosp Epidemiol. 2009.PMID: 19415969