“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, vol. 2, no. 04, Oct. 2025, pp. 510-8, https://doi.org/10.63841/iue24510.