title: [Prevalence of leukopenia in Chengdu].
mesh_terms: D000328:Adult; D000395:Air Pollutants, Occupational / Q000009:adverse effects; D002681:China; D005260:Female; D006801:Humans; D007970:Leukopenia / Q000453:epidemiology*; D008297:Male; D008403:Mass Screening; D008875:Middle Aged
chemical_list: D000395:Air Pollutants, Occupational