REY VARGAS, H.; ECHANDÍA, C.; OLAYA OCHOA, J. Maternal risk and neonatal problems. Colombia Medica, [S. l.], v. 24, n. 4, p. 146–151, 1993. DOI: 10.25100/cm.v24i4.6499. Disponível em: http://colombiamedica.univalle.edu.co/index.php/comedica/article/view/6499. Acesso em: 7 dec. 2025.