A new approach towards biomarker selection in estimation of human exposure to chiral chemicals: a case study of mephedrone.

Sci Rep · 2017 · PMC5693930 · PMID 29097766

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a decreasing trendno p-value reported

Its purity showed a decreasing trend in South Wales since its ban in the UK (from 84.7% in December 2011 to June 2012 to 45.6% in December 2012) 25 .

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