1. Pharmacy; University Cardenal Herrera-CEU; Valencia Spain
2. Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP); Barcelona Spain
3. Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO/CSISP -Public Health; Valencia Spain
4. Unitat Medicina; Universitat Jaume I; Castellón Spain
5. Centre for Research in Environmental Epidemiology-IMIM; Barcelona Spain
6. Laboratorio Normativo de Salud Pública; Departamento de Sanidad del Gobierno Vasco; Gipuzkoa Spain
7. Health Research Institute, Biodonostia; San Sebastián Spain
8. Public Health Division of Gipuzkoa; Basque Government; Gipuzkoa Spain
9. Area of Preventive Medicine and Public Health; University of Oviedo; Oviedo Spain
10. Servicio de Pediatría; Servicio Vasco de Salud; Hospital Ntra. Sra. de la Antigua; Gipuzkoa Spain
11. Servei de Ginecologia i Obstetrícia; Hospital de Sabadell; Sabadell Spain
12. Department of Public Health; Miguel Hernández University; San Juan de Alicante Spain