Tirado Otálvaro, A.F. and Moreno Uribe, C.M. (2007) “Associated factors to low vaccination rates in Santa Bárbara (Antioquia) 2005 - 2006”, Medicina UPB, 26(1), pp. 33–42. Available at: https://revistas.upb.edu.co/index.php/medicina/article/view/2311 (Accessed: 4 July 2026).