Khalifa AM, Aljohani SS, Alshammari FA. Assessment of Knowledge and Awareness of Down syndrome in Ha’il City Community, KSA. Pakistan Journal of Medical & Health Sciences [Internet]. 2022 Mar. 27 [cited 2024 Dec. 22];16(02):491. Available from: https://mail.pjmhsonline.com/index.php/pjmhs/article/view/157