[Incidence of pneumoconiosis in incumbent dust-exposed workers of coal mines].
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Jin-de
JD
Yan
Yan
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Cao
Cui-Lan
CL
Li
D000328:Adult; D003032:Coal Mining; D004391:Dust / Q000032:analysis*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure; D011009:Pneumoconiosis / Q000453:epidemiology*; D017132:Workplace
D004391:Dust