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Sule O, Ludlam HA, Walker CW, Brown DF, Kaufmann ME.Sule O, et al. Among authors: ludlam ha.Infect Control Hosp Epidemiol. 1997 Jul;18(7):510-2. doi: 10.1086/647658.Infect Control Hosp Epidemiol. 1997.PMID: 9247836