حسن عبد الكريم, خليل فادي, and سليمان طارق. “Evaluation of the Impact of Skeletal Sagital Malocclusion on Length of the Upper Lip and Anterior Exposure Ratio”. Tishreen University Journal -Medical Sciences Series 43, no. 6 (January 17, 2022): 219–234. Accessed May 9, 2024. https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/11552.