Noori, M. A., and O. I. Shihab. “Birth Prevalence of Cleft Lip and/Or Palate in Hawler City A Retrospective Hospital Based One Year Study”. Zanco Journal of Medical Sciences (Zanco J Med Sci), vol. 13, no. 2, Aug. 2009, pp. 69-72, doi:10.15218/zjms.2009.022.