1. Nephrology Unit, “F. Miulli” General Hospital , Acquaviva delle fonti, Bari , Italy
2. Renal, Dialysis and Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area (DIMEPRE-J), University of Bari , Bari , Italy
3. Nephrology Department, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí (I3PT-CERCA), Universitat Autònoma de Barcelona , Sabadell, Barcelona , Spain
4. Department of Nephrology, University Hospital “Ospedali Riuniti” , Foggia , Italy
5. Department of Nephrology, University Medical Centre Ljubljana and , Ljubljana , Slovenia
6. Faculty of Medicine, University of Ljubljana and , Ljubljana , Slovenia
7. Department of Biomedical and Clinical Sciences, University of Milano , Milan , Italy
8. Department of Nephrology and Renal Transplantation, University Hospital of Patras , Patras, Greece
9. Department of Nephrology, General University Hospital in Prague and First Faculty of Medicine, Charles University , Prague , Czech Republic
10. Department of Pathology, Amsterdam University Medical Center , Amsterdam , The Netherlands
11. Department of Vascular Surgery, Maastricht University Medical Center , Maastricht , The Netherlands
12. Vascular Access Society, Department of Surgery and Hemodialysis Access Center, Shaare Zedek Medical Center , Jerusalem , Israel
13. Vascular Access Society, Leiden University Medical Center , Leiden, The Netherlands
14. European Renal Association, Nephrology Department, Fundació Puigvert, Institut de Recerca Sant Pau, Universitat Autònoma de Barcelona , , Spain
15. Barcelona , , Spain
16. European Renal Association, University of Würzburg, Department of Clinical Research and Epidemiology, Würzburg, Germany and University of Oxford, Nuffield Department of Population Health, CTSU , Oxford , UK