SARKAR, M.; DASGUPTA, U.; BHATTACHARYA, S.; BHATTACHARYYA, K. D.; BHATTACHARYA, S. K. Status of oral polio vaccination program for international travellers and its determinants: an experience from a designated centre of West Bengal. International Journal Of Community Medicine And Public Health, [S. l.], v. 4, n. 4, p. 1223–1229, 2017. DOI: 10.18203/2394-6040.ijcmph20171353. Disponível em: https://www.ijcmph.com/index.php/ijcmph/article/view/1033. Acesso em: 21 feb. 2026.