Herrera, J. A., Vélez Medina, S., Molano, R., Medina, V., Botero, J. E., Parra, B., & Contreras, A. (2009). Periodontal intervention effects on pregnancy outcomes in women with preeclampsia. Colombia Medica, 40(2), 177–184. https://doi.org/10.25100/cm.v40i2.640