Toppo, M., D. Gour, D. Pal, R. Lodha, A. Nair, and S. Verma. “Contact Tracing Assessment of COVID 19 Transmissions In Bhopal District”. National Journal of Community Medicine, vol. 11, no. 12, Dec. 2020, pp. 435-9, doi:10.5455/njcm.20201205093756.