目的评价左氧氟沙星(喹诺酮类抗菌药)治疗慢性阻塞性肺疾病(COPD)急性加重期病人下呼吸道细菌感染的有效性、安全性。

Objective to evaluate the efficacy and safety of levofloxacin in the treatment of lower respiratory tract bacterial infection with acute exacerbation of chronic obstructive pulmonary disease (COPD).

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目的：评价左氧氟沙星两种方案治疗泌尿系统感染的成本-效果。

Objective: To evaluate cost-effectiveness of two therapeutic schemes of levofloxacin in the treatment of urinary system infection.

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目的评价卷曲霉素、左氧氟沙星及对氨基水杨酸钠联合化疗方案在耐多药肺结核治疗中的效果。

Objective To evaluate the clinical efficacy of a combination therapy with capreomycin , levofloxacin and sodium aminosalicylate in the treatment of multi-drug resistant pulmonary tuberculosis.

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