Mahajan, Z. A., S. R. Mehta, T. A. Bafna, and N. A. P. S. “Estimation of Coverage of Pulse Polio Immunization Round on 28th January 2018”. International Journal of Contemporary Pediatrics, vol. 6, no. 2, Feb. 2019, pp. 630-3, doi:10.18203/2349-3291.ijcp20190701.