9Rosenthal VD,Guzman S,Orellano PW.Nosocomial infection in medical-surgical intensive care unit in Argentina:attributable mortality and length of study[J].Am J Infect Control,2003,31(5):291-295.
10Clinical and Laboratory Standards Institute/NCCLS.Performance standards for antimicrobial susceptibility testing; Fifteenth informational supplement.CLSL/NCCLS document M100-S15[J].Clinical and Laboratory Standards Institute:Wayne[J].Pennsylvania,2005,25(1):1-167.