A. Maurya, R. K. Verma, P. Chaudhary, Y. Dwivedi, N. Singh, and N. Dwivedi, “To Study COVID 19 Infection among Healthcare Workers following Vaccination at Tertiary Care Centre”, J. Clin. Res. App. Med., vol. 1, no. 2, pp. 48–53, Feb. 2022.