Nieto, A., Herrera, J.A., Villar, J., Matorras, R., López de la Manzanara, C., Arribas, I., Alvarez, J. and Peiró, E. 2009. Association between calcium intake, parathormone levels and blood pressure during pregnancy. Colombia Medica. 40, 2 (Dec. 2009), 185–193. DOI:https://doi.org/10.25100/cm.v40i2.641.