1. Cardiology Department; Gaia Hospital Center; Gaia Portugal
2. Department of Physiology and Cardiothoracic Surgery; Faculty of Medicine, University of Porto; Porto Portugal
3. Department of Medicine; Faculty of Medicine, University of Porto; Porto Portugal
4. Department of Clinical Epidemiology, Predictive Medicine and Public Health; Faculty of Medicine, University of Porto; Porto Portugal
5. EPIUnit-Institute of Public Health; University of Porto; Porto Portugal