LAKSHMANAN, M. T.; KARUNAKARAN, U. Polio vaccination coverage among children aged 12-23 months in a health block in North Kerala. International Journal Of Community Medicine And Public Health, [S. l.], v. 7, n. 6, p. 2291–2297, 2020. DOI: 10.18203/2394-6040.ijcmph20202488. Disponível em: https://www.ijcmph.com/index.php/ijcmph/article/view/6286. Acesso em: 30 mar. 2026.