Mendoza-Rojas, V.C., Díaz-Martínez, L.A., Mantilla-Mora, G., Contreras-García, G.A., Mora-Bautista, V.M., Martínez-Paredes, J.F., Calderón-Rojas, A.L., Gómez-Tarazona, C.A. and Pinzón-Mantilla, K. 2017. 17-hydroxiprogesterone values in healthy preterm infants. Colombia Medica. 48, 4 (Dec. 2017), 161–166. DOI:https://doi.org/10.25100/cm.v48i4.2893.