4Coudron PE, Moland ES, Thomson KS. Occurrence and detection of AmpC beta-lactamases among Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis isolates at a veterans medical center [ J ] . J Clin Microbiol, 2000, 38 ( 5 ) : 1791-1796.
5Bou G, Oliver A, Ojeda M, et al. Molecular characterization of FOX-4, a new AmpC-type plasmid-mediated beta-lactamase from art Escherichia coli strain isolated in Spain [J]. Anti- microb Agents Chemother, 2000, 44 ( 9 ) : 2549-2553.
8National Committee for Clinical Laboratory Standards. Performance standards for antimicrobial disk susceptibili ty test. Approved standard M2-A6(M100S7) [ S]. 6 th edition. Wayne, PA NCCLS, 2003.
9CLSI. MIO0-Sll Performance sandards for antimicrobial suscepti- bility testing ; Eleventh informational supplement[S]. Wayne, PA CLSI, 2008.
10CLSI. M2-A7 Preference standards for antimicrobial disk suscepti- bility test. Approved standards[S]. Wayne, PA : CLSI, 2005.
