Mahdi Mahmoud , Ali, et al. “Evaluation of The Effect of Smoking and Chronic Obstructive Pulmonary disease(COPD) on Lipid Profile”. Diyala Journal of Medicine, vol. 22, no. 2, June 2022, pp. 76-85, https://www.djm.uodiyala.edu.iq/index.php/djm/article/view/897.