1. BCNatal, Department of Maternal-Fetal Medicine, Hospital Clínic Barcelona, Catalonia, Spain,
2. CIBER de Enfermedades Raras, Instituto de Salud Carlos III, Spain
3. BCNatal, Department of Obstetrics and Gynecology, Hospital Sant Joan de Déu. Esplugues de Llobregat, Catalonia, Spain,
4. Servei Bioquímica i Genètica Molecular, CDB, Hospital Clinic Barcelona, Catalonia, Spain, and