Özkan, A., M. M. İslam, H. Şeyma Akça, S. E. Eroğlu, and G. Aksel. “Effect of the prognostic nutritional index and systemic immuneinflammatory index in predicting short-term mortality in geriatric patients with SARS-CoV-2 infection”. European Journal of Clinical and Experimental Medicine, vol. 20, no. 4, Dec. 2022, pp. 399–403, doi:10.15584/ejcem.2022.4.3.