目的探讨萤石矿矽肺职工的死亡原因，为矽肺治疗提供依据。
Objective To investigate the cause of death of the silicotic patients of fluorite mine.
观察矽肺患者院内肺部感染的病原菌及其耐药性，为治疗提供借鉴。
Objective To study the pathogens isolated from nosocomial pulmonary infection in silicosis patients and the drug-resistance of these pathogens for providing reference of treatment.
目的研究矽肺抗纤维化治疗的远期疗效。
Objective To investigate long term therapeutic effect of combined anti fibrosis drugs on silicosis.
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