Ibrahim HA, Abuaffan AH. Prevalence of Malocclusion and Orthodontic Treatment Needs in Down Syndrome Sudanese Individuals. Orthod J Nepal [Internet]. 2014 Dec. 31 [cited 2024 Jul. 17];4(2):32-6. Available from: https://nepjol.info/index.php/OJN/article/view/13896