Thayyil, J., Padmanabhan, A., Gangadharan, A., & Annikady, N. (2022). Epidemiological study of COVID-19 mortality in a tertiary care center of South India. International Journal Of Community Medicine And Public Health, 9(11), 4074–4080. https://doi.org/10.18203/2394-6040.ijcmph20222640