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on April 11, 2013
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US rice imports 'contain harmful levels of lead'
If the lead exposure is a threshold effect, most of the population might have already banked the benefits of going below it.
Experts claim there is "no threshold"[1].
[1]
http://www.chem.unep.ch/pops/pdf/lead/leadexp.pdf
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Experts claim there is "no threshold"[1].
[1]http://www.chem.unep.ch/pops/pdf/lead/leadexp.pdf