1. Fetal Medicine Research Center, BCNatal, Barcelona Center for Maternal–Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Institut Clínic de Ginecologia, Obstetrícia i Neonatologia Universitat de Barcelona Barcelona Spain
2. Clinical Research Branch National Institute of Perinatology Mexico City Mexico
3. Fetal Medicine Unit Clínica Santa María Santiago Chile
4. National Maternal Perinatal Institute Lima Peru