1. Preventive Medicine and Public Health Area, Universidad de Alicante, Alicante, Spain
2. CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
3. National School of Public Health, Instituto de Salud Carlos III, Madrid, Spain
4. Center for International Health, University of Bergen, Bergen, Norway
5. Department of Public Health and Maternal and Child Health, Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain
6. Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdiSSC), Madrid, Spain