CÓRDOBA, R.; ESCOBAR, L. P.; GUZMÁN, L. L. Factors associated with first trimester period absence from prenatal control in pregnant women from ESE San Sebastian in La Plata, Huila, 2009. RFS Revista Facultad de Salud, [S. l.], v. 4, n. 1, p. 39–49, 2012. DOI: 10.25054/rfs.v4i1.118. Disponível em: https://journalusco.edu.co/index.php/rfs/article/view/118. Acesso em: 17 may. 2024.