1Karlowsky J A. Surveillance for antimicrobial susceptibility among clinical isolates of Pseudomonas aeruginosa and Acinetobacter bau- mannii from hospitalized patients in the United States, 1998 to 2001 [J] . Antimictob Agents Chemot her, 2003, 47 (5) : 1681 - 1688.
2Levin AS, Levy CE, Manrique AE, et al. Severe nosocomial infection with imipenem-resistance Acinetobacter baumannii treated with ampi- cilin/sulbactam[J], lnt J Antimicrob Agents, 2003, 21(1) :58-62.