1. Department Internal Medicine Section of Nephrology and Transplantation Erasmus University Medical Center Rotterdam The Netherlands
2. Department of Nephrology Radboud University Medical Center Nijmegen The Netherlands
3. Department of Gastroenterology and Hepatology Erasmus University Medical Center Rotterdam The Netherlands
4. Department of Cell Biology University Medical Center Groningen Groningen The Netherlands
5. Department of Public Health Erasmus University Medical Center Rotterdam Rotterdam The Netherlands
6. Department of Immunohematology and Blood Transfusion Leiden University Medical Center Leiden The Netherlands
7. Department of Pathology Erasmus University Medical Center Rotterdam Rotterdam The Netherlands