1. Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
2. Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
3. Service of Pediatric, Hospital Universitario Principe de Asturias, 28801 Alcalá de Henares, Spain
4. Department of Biomedicine and Biotechnology, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
5. Department of Public and Maternal and Child Health, School of Medicine, Complutense University of Madrid, 28040 Madrid, Spain
6. Department of Obstetrics and Gynecology, University Hospital Gregorio Marañón, 28009 Madrid, Spain
7. Health Research Institute Gregorio Marañón, 28009 Madrid, Spain
8. Immune System Diseases-Rheumatology and Internal Medicine Service, University Hospital Príncipe de Asturias, CIBEREHD, 28806 Alcalá de Henares, Spain