Many causes: Possible causes include: 1) exposure to environmental toxins 2) ingestion of drugs 3) onset of viral illness 4) food poisoning 5) exposure to radiation.
Answered 3/3/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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