substances and disease registry (atsdr), a public health agency of the u.s. department of health and human services, looks at how best to interpret results from human hair samples to evaluate environ- mental exposures. currently, hair analysis is used for purposes other than assessing environmental...
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difference (cfd) brokerage firm and online trading platform. cfds are derivative instruments that allow customers to buy and sell financial instruments without actually holding them in their account. plus offers cfd trading in a variety of financial markets including commodities, cryptocurrencies forex...
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