1. Division of Maternal and Fetal Medicine, Department of Obstetrics and Gynecology University Hospital La Paz Madrid Spain
2. Division of Pediatric Cardiology University Hospital La Paz Madrid Spain
3. Division of Maternal and Fetal Medicine, Department Obstetrics and Gynecology University Hospital 12 Octubre Madrid Spain
4. Division of Maternal and Fetal Medicine, Department Obstetrics and Gynecology St Creu and St Pau Hospital Barcelona Spain
5. RETICS “Maternal and Child Health and Development Network” (SAMID Network), ISCIII Madrid Spain