Development, Validation, and Application of a Novel Multi-Analyte High-Resolution Gas Chromatography-Mass Spectrometry (HRGC-MS) Method for the Quantification of Opioid Derivatives, Including Heroin, Morphine, and Fentanyl, in Biological Matrices with Enh. (2025). Journal of Carcinogenesis, 24(4s), 1035-1048. https://doi.org/10.64149/J.Carcinog.24.8s.1035-1048