1. Department of Internal Medicine, Leiden University Medical Center , Leiden , The Netherlands
2. Department of Nephrology and Hypertension, University Medical Center Utrecht , Utrecht , The Netherlands
3. Department of Internal Medicine, St. Antonius Hospital , Nieuwegein , The Netherlands
4. Department of Biomedical Data Sciences, Leiden University Medical Center , Leiden , The Netherlands
5. Dutch Kidney Patient Association (NVN) , Bussum , The Netherlands
6. Department of Nephrology, Haga Hospital , The Hague , The Netherlands