1. Department of Obstetrics and Gynecology, Hospital Clínico San Carlos and Instituto de Investigación Sanitaria San Carlos, Universidad Complutense de Madrid, Madrid, Spain
2. Department of Obstetrics and Gynecology, Fetal Medicine Unit, Hospital Universitario 12 de Octubre, Instituto de Investigación Hospital 12 de Octubre, Universidad Complutense de Madrid, Madrid, Spain
3. Primary Care Interventions to Prevent Maternal and Child Chronic Diseases of Perinatal and Developmental Origin (RICORS Network), Instituto de Salud Carlos III, Madrid, Spain