Research project--air pollution program.
D000328:Adult; D000368:Aged; D000397:Air Pollution; D004781:Environmental Exposure; D005260:Female; D006705:Homeopathy; D006801:Humans; D007252:Influenza Vaccines; D008297:Male; D008875:Middle Aged; D013458:Sulfur Dioxide; D013464:Sulfuric Acids / Q000627:therapeutic use*
D007252:Influenza Vaccines; D013464:Sulfuric Acids; D013458:Sulfur Dioxide