[Chronic bronchitis in silicotics: bronchoscopic and bacteriological study].
D001991:Bronchitis / Q000209:etiology*; D029481:Bronchitis, Chronic; D001999:Bronchoscopy; D006801:Humans; D012829:Silicosis / Q000150:complications*
BRONCHITIS/etiology; BRONCHOSCOPY; SILICOSIS/complications