2025. 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. Journal of Carcinogenesis. 24, 4s (Oct. 2025), 1035–1048. DOI:https://doi.org/10.64149/J.Carcinog.24.8s.1035-1048.