1. Center for Health Technology and Services Research, Faculty of Medicine, University of Porto, Rua Dr. Plácido da Costa, s/n 4200-450 Porto, Portugal
2. Department of Health Care Policy, Harvard Medical School, 180 Longwood Avenue, Boston, MA 02115, USA
3. Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Rua Dr. Plácido da Costa, s/n 4200-450 Porto, Portugal
4. Serviço de Cardiologia, Unidade de Diagnóstico e Intervenção Cardiovascular, Centro Hospitalar de Vila Nova de Gaia e Espinho, R. Conceição Fernandes 1079, Vila Nova de Gaia Portugal
5. Institute of Preventive Medicine and Public Health and ISAMB – Institute of Environmental Health, Faculdade de Medicina, Universidade de Lisboa, Av. Professor Egas Moniz, 1649-028 Lisbon, Portugal
6. Portuguese Institute of Oncology Porto, R. Dr. António Bernardino de Almeida 62, 4200-162 Porto, Portugal
7. School of Public Health, Faculty of Medicine, Edward Ford Building (A27), The University of Sidney, NSW 2006, Australia
8. Department of Cardiovascular Medicine, Lahey Hospital and Medical Center, Burlington, MA 01805, USA
9. Tufts University School of Medicine, Boston, MA 02111, USA
10. Department of Biostatistics, Havard T. H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA