1. Department of Clinical Epidemiology; Predictive Medicine and Public Health; University of Porto Medical School; Porto Portugal
2. EPIUnit; Institute of Public Health; University of Porto (ISPUP); Porto Portugal
3. Institute of Social Sciences; University of Lisbon; Lisbon Portugal
4. Institute of Preventive Medicine and Public Health; Faculty of Medicine of Lisbon; Lisbon Portugal
5. Faculty of Medicine; University of Lisbon; Lisbon Portugal