Jain, A., A. Verma, S. Shukla, and A. K. Verma. “Dynamics of Anti-SARS-CoV-2 IgG Antibodies over Four Months Period During Pandemic in Health Care Workers”. International Journal Of Community Medicine And Public Health, vol. 9, no. 5, Apr. 2022, pp. 2149-51, doi:10.18203/2394-6040.ijcmph20221232.