1. Department of Nephrology, Ghent University Hospital, 9000 Ghent, Belgium
2. Department of Pathology, Ghent University Hospital, 9000 Ghent, Belgium
3. Faculty of Medicine, University of Antwerp, 2610 Wilrijk, Belgium
4. Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
5. Department of Laboratory Medicine, Ghent University Hospital, 9000 Ghent, Belgium
6. Research Foundation-Flanders (FWO), 1000 Brussels, Belgium