B., Karthik Adiga, Shashi B. L., and Deepa A. S. “A Study on Echocardiography Findings in Severe COVID-19 Pneumonia Patients”. International Journal of Advances in Medicine 9, no. 4 (March 24, 2022): 468–472. Accessed October 1, 2025. https://www.ijmedicine.com/index.php/ijam/article/view/3395.