Hu Jintao, General Secretary of the Central Committee of the Communist Party of China (CPC) and Chinese President, deliv......

[目的]通过了解山西某煤矿不同工种尘肺患者的发病特征,探讨不同岗位(作业环境)对工人健康的影响。[方法]收集山西某煤矿集团1970......