水泥作业工人的职业暴露和吸烟对肺通气功能和胸部X线影像的影响
수니작업공인적직업폭로화흡연대폐통기공능화흉부X선영상적영향
Effect of Occupational Exposure and Smoking on the Lung Ventilation Function and X-Ray Image in Chest among Concrete Workers
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