17-hydroxiprogesterone values in healthy preterm infants. Colombia Medica, [S. l.], v. 48, n. 4, p. 161–166, 2017. DOI: 10.25100/cm.v48i4.2893. Disponível em: https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/2893. Acesso em: 22 dec. 2025.