Abdullah, G. H., S. N. Ahmed, N. M. Nanakali, and A.-Q. A. Hassan. “Alterations in Malondialdehyde Levels and Superoxide Dismutase Activity in the Sera of Occupational Workers in Erbil City”. Zanco Journal of Medical Sciences (ZJMS), vol. 18, no. 1, Apr. 2014, p. 638_644, doi:10.15218/zjms.2014.0008.