CKD: A Call for an Age-Adapted Definition

1Department of Nephrology, Dialysis, Transplantation, University of Liège, Centre Hospitalier Universitaire Sart Tilman, ULg CHU, Liège, Belgium;

2Department of Medical Informatics, Amsterdam Public Health Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands;

3Emma Children’s Hospital, Amsterdam UMC, Vrije University Amsterdam, Amsterdam, The Netherlands;

4Department of Nephrology, Skåne University Hospital, Lund University, Malmö, Sweden;

5Nephrology, Dialysis, Hypertension and Functional Renal Exploration, Edouard Herriot Hospital, Hospices Civils de Lyon and Université Lyon 1, Lyon, France;

6Metabolic and Renal Research Group, UiT The Arctic University of Norway, Tromsø, Norway;

7Section of Nephrology, Clinic of Internal Medicine, University Hospital of North Norway, Tromsø, Norway;

8Renal Transplantation Department, Necker Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France, Paris Sud University, Orsay, France;

9Division of Nephrology and Dialysis, Department of Medicine, University of Verona, Verona, Italy;

10Department of Nephrology, Charité – Universitätsmedizin Berlin, Berlin, Germany;

11Department of Medicine, Geffen School of Medicine, University of California Los Angeles, Los Angeles, California;

12Division of Nephrology, National University Hospital of Iceland, Reykavik, Iceland;

13Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, Groningen, The Netherlands;

14Nephrology, Dialysis and Renal Transplantation Department, Hôpital Nord, Centre Hospitalier Universitaire de Saint-Etienne, Jean Monnet University, Communauté d’universités et Etablissements Université de Lyon, Lyon, France;

6Metabolic and Renal Research Group, UiT The Arctic University of Norway, Tromsø, Norway;

7Section of Nephrology, Clinic of Internal Medicine, University Hospital of North Norway, Tromsø, Norway;

15Nephrology, Dialysis, Apheresis Unit, Centre Hospitalier Universitaire Caremeau Nimes, University of Montpellier, Montpellier, France;

16Equalis AB, Uppsala, Sweden;

12Division of Nephrology, National University Hospital of Iceland, Reykavik, Iceland;

17Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland;

18Department of Public Health and Primary Care, Katholieke Universiteit Leuven Campus Kulak Kortrijk, Kortrijk, Belgium;

19Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota;

20Charité – Universitätsmedizin Berlin, corporate member of Free University of Berlin, Humboldt University of Berlin, and Berlin Institute of Health, Institute of Public Health, Berlin, Germany;

21Centre for Kidney Research and Innovation, Division of Medical Sciences and Graduate Entry Medicine, School of Medicine, University of Nottingham, UK;

22Department of Medicine, Queen’s University, Kingston, Ontario, Canada;

23Department of Clinical Chemistry and Pharmacology, Laboratory Medicine, Skåne University Hospital, Lund University, Lund, Sweden; and

24Department of Nephrology, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands