1. Department of Health Sciences, Federal University of Espírito Santo, São Mateus, Brazil
2. Postgraduate Programme in Epidemiology, Federal University of Pelotas, Pelotas, Brazil
3. Department of Nursing, Federal University of Pelotas, Pelotas, Brazil
4. MRC Unit for Lifelong Health and Ageing at UCL, University College London, London, UK
5. School of Public Health, University of Minnesota, Minneapolis, MN, USA
6. EPI-Unit, Institute of Public Health, University of Porto, Porto, Portugal
7. Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal