de Obstetricia y Ginecología - FECOLSOG, F.C. 2016. Prize-winning work presented at the 30th National Obstetrics and Gynecology Congress held between the 25th and 28th of May 2016 in Cali (Colombia). Revista Colombiana de Obstetricia y Ginecología. 67, 2 (Jun. 2016), 159–161. DOI:https://doi.org/10.18597/rcog.382.