ALI, Mohammad et al. Community Participation in Two Vaccination Trials in Slums of Kolkata, India: A Multi-level Analysis. Journal of Health, Population and Nutrition, [S. l.], v. 28, n. 5, p. 450–457, 2010. DOI: 10.3329/jhpn.v28i5.6153. Disponível em: https://www.banglajol.info/index.php/JHPN/article/view/6153. Acesso em: 30 sep. 2025.