Pandurangan, Viswanathan, Arun K, Lakshmi Marappa, Sudha Madhavan, Vaasanthi Rajendran, and Sowmya Gopalan. “CORRELATION OF SYSTEMIC IMMUNE-INFLAMMATION INDEX (SII) AND FERRITIN TO LYMPHOCYTE PERCENTAGE RATIO (FLPR) WITH NEUTROPHIL TO LYMPHOCYTE RATIO (NLR) AMONG PATIENTS WITH SEVERE COVID-19: A RETROSPECTIVE OBSERVATIONAL STUDY FROM INDIA”. Eastern Ukrainian Medical Journal 13, no. 1 (March 29, 2025): 198-208. Accessed July 6, 2026. https://eumj.med.sumdu.edu.ua/index.php/journal/article/view/796.