1. National School of Public Health, Institute of Health “Carlos III”, Spain
2. GESEC, Lleida University, Lleida, Spain
3. Epidemiology and Global Health Unit, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
4. Faculty of Nursing, Lleida University, Lleida, Spain
5. Ciber of Epidemiology and Public Health (CIBERESP), Spain