No abstract available
MeSH terms
-
Adult
-
Air Pollutants, Occupational / poisoning
-
Humans
-
Male
-
Middle Aged
-
Occupational Diseases / etiology*
-
Occupational Exposure / adverse effects
-
Pneumoconiosis / etiology*
-
Silicon Dioxide / poisoning
Substances
-
Air Pollutants, Occupational
-
Silicon Dioxide