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\bibitem{Parrilla_etal2021} {\textquotedblleft}\textit{Enhanced electrochemical detection of illicit drugs in oral fluid by the use of surfactant-mediated solution}{\textquotedblright}. Parrilla M, Joosten F, De Wael K, Sensors And Actuators B-Chemical \textbf{348}, 130659 (2021).   http://doi.org/10.1016/J.SNB.2021.130659

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