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Wang X, Johansen SS, Nielsen MKK, Linnet K.Wang X, et al. Among authors: nielsen mkk.Drug Test Anal. 2017 Aug;9(8):1137-1151. doi: 10.1002/dta.2130. Epub 2016 Dec 22.Drug Test Anal. 2017.PMID: 27794182
Nielsen MKK, Nedahl M, Johansen SS, Linnet K.Nielsen MKK, et al.Drug Test Anal. 2018 Jan 16. doi: 10.1002/dta.2359. Online ahead of print.Drug Test Anal. 2018.PMID: 29341495