Hasan, Hasan Sabah, and Ayshan Kolemen. “Pattern of Dental Malocclusion in Orthodontic Patients in Erbil City, Kurdistan Region-Iraq, A Retrospective Study”. Annual Research & Review in Biology 34, no. 4 (February 12, 2020): 1-9. Accessed February 23, 2020. http://journalarrb.com/index.php/ARRB/article/view/30156.