1. Division of Fetal-Maternal Medicine, Department of Obstetrics and Gynecology, “Puerta del Mar” University Hospital, Cadiz, Spain
2. Clinicas Ginemed, Sevilla, Spain
3. Department of Obstetrics and Gynecology, “Hospital de Jerez” University Hospital, Jerez de la Frontera, Cádiz, Spain
4. Research Unit, “Puerta del Mar” University Hospital, Cádiz, Spain
5. Department of Endocrinology and Nutrition, “Puerta del Mar” University Hospital, Cadiz, Spain
6. Division of Fetal-Maternal Medicine, Department of Obstetrics, “La Paz” University Hospital, Madrid, Spain