Ramesh, J., J. Varghese, S. L. S. Reddy, and M. Rajesh. “Systemic Inflammatory Index a Simple Marker of Thrombo-Inflammation and Prognosis in Severe COVID-19 Patients”. International Journal of Advances in Medicine, vol. 8, no. 9, Aug. 2021, pp. 1335-42, doi:10.18203/2349-3933.ijam20213165.