Development, validation and application of an HPLC–MS/MS method for the determination of fentanyl and nor-fentanyl in human plasma and saliva
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Journal of Chromatography B
© 2014 Elsevier B.V.. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.