Non-prescription Fentanyl Positive Toxicology: Prevalence, Positive Predictive Value of Fentanyl Immunoassay Screening, and Description of Co-substance Use.
Kerensky T, LaRochelle M, Fan SL, Kosakowski S, Wason K, Walley AY. Non-prescription Fentanyl Positive Toxicology: Prevalence, Positive Predictive Value of Fentanyl Immunoassay Screening, and Description of Co-substance Use. J Addict Med. 2020 Sep 08. PMID: 32909981.

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