Fida, Abida, Sadia Humayun, Iram Fatima, Imran Basit, Mazhar Ishaq, and Fida Hussain. 2018. “SAFETY OF HIGH INTENSITY ACCELERATED CORNEAL COLLAGEN CROSS-LINKING IN KERATOCONUS PATIENTS ON BASIS OF ENDOTHELIAL CELL DENISITY”. Journal of Ayub Medical College Abbottabad 30 (4):501-5. https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/3509.