[1] Univ Cartagena, Dept Obstet & Gynecol, Grp Invest Cuidado Intens & Obstetr GRICIO, Cartagena, Colombia
[2] Ctr Hosp Serena Mar, Cartagena, Colombia
[3] CES Univ, Medellin, Colombia
[4] Hosp San Vicente Fdn, Medellin, Colombia
[5] Clin Prado, Medellin, Colombia
[6] Fdn Valle Lili, Cali, Colombia
[7] Univ Milan, Milan, Italy
[8] Univ Cartagena, Cartagena, Colombia
[9] Clin Versalles, Cali, Colombia
[10] OHSU, Obstetr & Gynecol, Bethlehem, PA USA
[11] San Gabriel Valley Perinatal Med Grp, Pomona, CA USA