Parc Sanitari Sant Joan de Déu, St. Boi de Llobregat; Primary Care Prevention and Health Promotion Research Network, Madrid. University of Valencia; Centre for Biomedical Research in Physiopathology of Obesity and Nutrition, Madrid. King's College London; Guy's and St. Thomas' NHS Foundation Trust, London. Primary Care Prevention and Health Promotion Research Network, Madrid; London School of Economics and Political Science. London School of Economics and Political Science. University Jaime I de Castellón. Miguel Servet Hospital, Aragon Institute of Health Sciences. Hospital de la Santa Creu i Sant Pau, Barcelona; Centre for Biomedical Research in Mental Health, Madrid. Parc Sanitari Sant Joan de Déu, St. Boi de Llobregat. Parc Sanitari Sant Joan de Déu, St. Boi de Llobregat; Centre for Biomedical Research in Epidemiology and Public Health, Madrid. Parc Sanitari Sant Joan de Déu, St. Boi de Llobregat; Primary Care Prevention and Health Promotion Research Network, Madrid. Electronic address: jvluciano@pssjd.org.