KHAN, M. A.; AKRAM, S.; USMAN, H. B. POLIO IMMUNIZATION AND AWARENESS: A CROSS SECTIONAL STUDY IN SHANGLA AND SWAT DISTRICTS, PAKISTAN. Journal of Postgraduate Medical Institute, [S. l.], v. 30, n. 2, 2016. Disponível em: https://www.jpmi.org.pk/index.php/jpmi/article/view/1725. Acesso em: 29 mar. 2024.