Salih, Maan Hasan, Shimaa Jumaa Abood, and Dhuha Salah Noori. 2026. “Estimation Mitochondrial DNA Copy Number Variation Between Two Age Groups of Iraqi Tobacco Smokers”. Iraqi Journal of Science 67 (5): 2617-27. https://doi.org/10.24996/ijs.2026.67.5.9.