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Consequences of attempts to mask urine drug screens.
Heard K, Mendoza CD. Heard K, et al. Ann Emerg Med. 2007 Nov;50(5):591-2. doi: 10.1016/j.annemergmed.2007.04.003. Epub 2007 May 9. Ann Emerg Med. 2007. PMID: 17490789 No abstract available.