2025. Comparative Analysis of Heavy Metal Exposure and Liver Enzyme Levels in Hookah and Cigarette Smokers: Heavy Metal Exposure and Liver Enzyme Levels in Hookah and Cigarette Smokers. Academic Journal of International University of Erbil. 2, 04 (Oct. 2025), 510–518. DOI:https://doi.org/10.63841/iue24510.