A. Kizhatil, R. ., H. C. Hariharan, A. John, A. M. Thomas, and G. Padmanabhan, “Assessment of immunization coverage and associated factors among children in Paravur Taluk of Ernakulam district, Kerala”, Int J Community Med Public Health, vol. 6, no. 8, pp. 3594–3601, Jul. 2019.