Umar M, Akhtar TS, Osama M. ISSUES PERTAINING TO DAAS. J Ayub Med Coll Abbottabad [Internet]. 2017 Feb. 1 [cited 2025 Dec. 15];28(4 Sup):895-900. Available from: https://ayubmed.edu.pk/jamc/index.php/jamc/article/view/2317