Julia Diez (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.), Paloma Conde (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.), Maria Sandin (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.), Maria Urtasun (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.), Remedios López (Public Health Institute. Madrid Salud (Madrid City Council), Spain), Joel Gittelsohn (Global Obesity Prevention Center at Johns Hopkins, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, US), Manuel Franco (University of Alcala)