[1] Clin Colsanitas SA, Bogota, Colombia
[2] FUNDARED MATERNA, Bogota, Colombia
[3] Oregon Hlth & Sci Univ, Dept Obstet & Gynecol, Div Maternal Fetal Med, Portland, OR 97201 USA
[4] Cedars Sinai Med Ctr, Los Angeles, CA 90048 USA
[5] Univ Antioquia, Hosp Univ San Vicente Fdn, Medellin, Colombia
[6] Univ Antioquia, Dept Obstet & Ginecol, Medellin, Colombia
[7] Univ Antioquia, NACER Salud Sexual & Reprod, Medellin, Colombia
[8] Pontificia Univ Javeriana, Hosp Univ San Ignacio, Bogota, Colombia
[9] Univ Pontificia Bolivariana, Clin Univ Bolivariana, Medellin, Colombia
[10] Grp Invest Maternidad Segura, ESE Clin Maternidad Rafael Calvo, Cartagena, Colombia
[11] Hosp Gen Medellin, Luz Castro de Gutierrez ESE, Medellin, Colombia
[12] Clin Colsanitas SA, Grp Invest INPAC, Lab Clin Sanitas, Bogota, Colombia
[13] Univ Cartagena, ESE Clin Maternidad Rafael Calvo, Cartagena, Colombia
[14] Univ Sinu, ESE Clin Maternidad Rafael Calvo, Cartagena, Colombia