R. Benitez, M. L. Ibarra Guamán, and J. P. Beltrán Carreño, “Diagnostic value of cervical length measured by transvaginal ultrasound in predicting and preventing preterm birth”, Salud y Bienestar, vol. 10, no. 1, pp. 25–35, Apr. 2026, doi: 10.26871/killkana_salud.v10i1.1646.