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16只耳鼓膜穿孔的作业工人的听力状况。鼓膜穿孔组为普检确诊的纺织女工,对照组的条件和调查组基本相
Listening status of 16 workers with ear eardrum perforation. Tympanic membrane perforation group for the general diagnosis of textile workers, the control group conditions and the basic phase of the investigation group