1 Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcalá, Madrid, Spain.
2 Tobacco Control Unit, Cancer Prevention Program, Institut Català d'Oncologia, l'Hospitalet de Llobregat, Spain Cancer Control and Prevention Area, Institut d'Investigació Biomèdica de Bellvitge, L'Hospitalet de Llobregat, Spain Department of Clinical Sciences, Medical School (Bellvitge), Universitat de Barcelona, L'Hospitalet de Llobregat, Spain.
3 Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD Department of Environmental Health Sciences and Institute for Global Tobacco Control, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD.
4 Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcalá, Madrid, Spain CIBER Epidemiología y Salud Pública, Spain.
5 Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD Social and Cardiovascular Epidemiology Research Group, School of Medicine, University of Alcalá, Madrid, Spain Department of Epidemiology, Atherothrombosis, and Cardiovascular Imaging, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain.