The masks are sold from SPFX masks, based in Van Nuys, California.

加州范纽斯的SPFX面具公司出售此种面具。

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Conclusion SPFX is very effective and safe in the treatment of RTBI in the senile patients.

结论司帕沙星治疗老年患者呼吸道细菌感染疗效肯定、安全。

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Objective to compare the efficacy and safety of sparfloxacin (SPFX) and ofloxacin (OFLX) in the treatment of respiratory tract bacterial infections (RTBI) in the senile patients.

目的对照研究司帕沙星(SPFX)与氧氟沙星(OFLX)治疗老年患者呼吸道细菌感染(rtbi)的临床疗效及安全性。

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