• According to the date obtained the mortality from various diseases of silicotics were calculated and compared with age specific death rate of local residents using SMR as index.

    计算矽肺患者各类疾病死亡率当地居民年龄别死亡率进行比较,计算标化死亡比;

    youdao

  • According to the date obtained the mortality from various diseases of silicotics were calculated and compared with age specific death rate of local residents using SMR as index.

    计算矽肺患者各类疾病死亡率当地居民年龄别死亡率进行比较,计算标化死亡比;

    youdao

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