Epidemic psychogenic illness in an industrial setting--Pennsylvania.
D004196:Disease Outbreaks / Q000453:epidemiology*; D005260:Female; D006261:Headache / Q000209:etiology; D006801:Humans; D008297:Male; D009325:Nausea / Q000209:etiology; D009784:Occupational Diseases / Q000453:epidemiology*; D009812:Odorants; D010414:Pennsylvania; D011602:Psychophysiologic Disorders / Q000453:epidemiology*