[1] State Ctr Timely Prenatal Screening, Leon, Guanajuato, Mexico
[2] Iberoamer Res Network Obstet Gynecol & Translat M, Mexico City, DF, Mexico
[3] Western Gen Hosp, Jaliscos Hlth Secretariat, Guadalajara, Jalisco, Mexico
[4] Mexican Inst Social Secur, Monterrey, Mexico
[5] Fetal Hlth Mexico, Mat Fetal Med Dept, Culiacan, Sinaloa, Mexico
[6] Univ Colima, Fetal Med Dept, Colima, Mexico
[7] Dr Dario Fernandez Gen Hosp ISSSTE, Mat Fetal Med Dept, Mexico City, DF, Mexico
[8] Natl Inst Perinatol, Clin Res Div, Mexico City, DF, Mexico
[9] Mil Hosp Womens Specialties & Neonatol, Mexico City, DF, Mexico
[10] Univ Barcelona, Hosp Clin, BCNatal Barcelona Ctr Mat Fetal & Neonatal Metern, Fetal Med Res Ctr, Sabino Arana 1, Barcelona 08028, Spain
[11] Univ Barcelona, Inst Clin Ginecol Obstet & Neonatol, Hosp St Joan Deu, Sabino Arana 1, Barcelona 08028, Spain