بكداش ه. ., مالك حجازية, and فراس حسين. “Prognostic Value of Admission Anemia in Patients With COVID 19 in Tishreen University Hospital”. Tishreen University Journal -Medical Sciences Series, vol. 45, no. 2, May 2023, pp. 431-4, https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/14687.