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Grant BD, Smith CA, Karvonen K, Richards-Kortum R.Grant BD, et al.Anal Chem. 2016 Mar 1;88(5):2553-7. doi: 10.1021/acs.analchem.5b03999. Epub 2016 Feb 16.Anal Chem. 2016.PMID: 26824718Free PMC article.