[Epidemiological survey of chronic bronchitis in pyrite miners].
D000293:Adolescent; D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000453:epidemiology*; D002908:Chronic Disease; D006801:Humans; D007558:Italy; D008297:Male; D008875:Middle Aged; D008906:Mining; D009784:Occupational Diseases / Q000453:epidemiology*
Indagine epidemiologica sulla bronchite cronica nei minatori di pirite.