A definition by Cullen is stated as "... an acquired disorder characterized by recurrent symptoms, referable to multiple organ systems, occurring in response to demonstrable exposure to many chemically unrelated compounds at doses far below those established in the general population to cause harmful effects. No single widely accepted test of physiologic function can be shown to correlate with symptoms." (Cullen MR. The worker with multiple chemical hypersensitivities: An overview. Occup Med 1987;2: 655-661) more . . .
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