4Tiemei Z, Xiangqun F, Youning L. Resistance phenotypes and genotypes of erythromycin-resistant streptococcus pneumonia isolates in Beijing and Shenyang, China. Antimicrob Agents Chemother,2004,10:4040-4041.
5Rello J, Gallego M, Mariscal D, et al. The value of routine microbial investigation in ventilator associated pneumonia. Am J Respir Crit Care Med, 1997,156 : 196-200.
7Lockhart SR, Abramson MA, Beekmann SE, et al. Antimi erobial resistance among Gram-negative bacilli causing infections in intensive care Unit patients in the United States be tween1993 and 2004[J]. J Clin Mierobiol, 2007 , 45 : 3352- 3359.
8Biedenbach DJ, Moet GJ, Jones RN. et al. Occurrence and antimicrobial resistance pattern comparisons among blood- stream infection isolates from the SENTRY Antimicrobial Surveillance Program (1997- 2002) [J]. Diagn Microbiol In fect Dis, 2004,50 (1) : 59-69.
9Hobart DJ, Biedenbach DJ, Mutnick AH, et al. Pathogen of occurrence and susceptibility patterns associated with pneumonia in hospitalized patients in North America: results of the SENTRY Antimicrobial Surveillance Study (2000) [J]. Diagn Microbiol Infect Dis,2003,45(4) :279-285.
4Clinical and Laboratory Standard Institute. Performance standards for antimicrobial susceptibility testing: eigh- teenth informational supplement, M100-S19[S]. Wayne, PA:CLSI,2009:80-81.