Multiple chemical sensitivity (MCS), also known as "20th Century Syndrome", "Environmental illness", "Sick Building Syndrome", Idiopathic Environmental Intolerance (IEI), can be defined as a "chronic, recurring disease caused by a person's inability to tolerate an environmental chemical or class of foreign chemicals" according to the NIH National Institute of Environmental Health Sciences web site. Mark R. Cullen [1], et al, of Yale Environmental Medicine have published a definition of MC ...
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Multiple Chemical Sensitivity Organizations

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