Das, G., S. Sarkar, and S. Datta. “Evaluation of Serum Ferritin and Its Correlation With Disease Activity in Non-Systemic Juvenile Idiopathic Arthritis”. International Journal of Contemporary Pediatrics, vol. 8, no. 4, Mar. 2021, pp. 625-30, doi:10.18203/2349-3291.ijcp20210957.