Immunisation and Infant Mortality in Pakistan. The Pakistan Development Review, [S. l.], v. 32, n. 4II, p. pp.1117–1123, 1993. DOI: 10.30541/v32i4IIpp.1117-1123. Disponível em: https://thepdr.pk/index.php/pdr/article/view/1204. Acesso em: 12 jan. 2026.