1. Nephrology Department, Centro Hospitalar Universitário do Porto (CHUP), Porto, Portugal
2. Unit for Multidisciplinary Research in Biomedicine, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
3. EPI Unit, ISPUP – Institute of Public Health, University of Porto, Porto, Portugal
4. Department of Population Studies, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal