Kabrah, Saeed M. “An Evaluation of Blood Components Inventory Management During Hajj and Umrah Season at Makkah Hospitals: Impact of Hajj and Umrah on Blood Inventory”. Journal of Contemporary Medical Sciences 8, no. 6 (December 26, 2022): 408–412. Accessed January 29, 2023. https://jocms.org/index.php/jcms/article/view/1303.