1. Clinical Research Division National Institute of Perinatology (Isidro Espinosa de lo Reyes), Mexico City Mexico
2. Iberoamerican Research Network in Obstetrics Gynecology and Translational Medicine Mexico City Mexico
3. Fetal Medicine Research Center, BCNatal, Barcelona Center for Maternal–Fetal and Neonatal Medicine, Hospital Clínic and Hospital Sant Joan de Deu Institut Clínic de Ginecologia, Obstetricia i Neonatologia, Universitat de Barcelona Barcelona Catalonia Spain
4. Second Department of Obstetrics and Gynaecology, Medical School, Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
5. State Center for Timely Prenatal Screening (CETO) Leon Guanajuato Mexico
6. Department of Obstetrics and Gynaecology, Prince of Wales Hospital The Chinese University of Hong Kong, Shatin Hong Kong SAR China