Initial pulmonary function testing in gold miners in Johannesburg.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001827:Body Height; D006046:Gold; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D008906:Mining; D012129:Respiratory Function Tests
D006046:Gold