Lifting the fog.
D000393:Air Pollutants / Q000009:adverse effects; D000395:Air Pollutants, Occupational / Q000009:adverse effects; D000397:Air Pollution / Q000517:prevention & control; D006801:Humans; D012129:Respiratory Function Tests; D012140:Respiratory Tract Diseases / Q000209:etiology; D014887:Weather
D000393:Air Pollutants; D000395:Air Pollutants, Occupational