1. Department of Preventive Medicine and Public Health, University of Granada, 18071 Granada, Spain
2. Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain
3. Instituto de Investigación Biosanitaria (ibs. GRANADA), Complejo Hospitales Universitarios de Granada/Universidad de Granada, 18071 Granada, Spain