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Birnbaum D, Kelly M, Chow AW.Birnbaum D, et al. Among authors: chow aw.Infect Control Hosp Epidemiol. 1991 May;12(5):319-26. doi: 10.1086/646347.Infect Control Hosp Epidemiol. 1991.PMID: 1865104Review.No abstract available.