Pedro Gullon (Escuela Nacional de Sanidad), Alba Cebrecos (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.), Francisca Sureda (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.), Usama Bilal (Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, US), Julia Diez (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.), Francisco Escobar (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.), Manuel Franco (Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcala, Alcala de Henares, Madrid, Spain.)