فراس حسين. “Prognostic Value of Lymphocyte Count, NLR and PLR on Admission for COVID-19 Patients at Tishreen University Hospital in Lattakia”. Tishreen University Journal -Medical Sciences Series, vol. 45, no. 4, Sept. 2023, pp. 47-59, https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/16047.