1. Faculty of Medicine and Life Sciences, University of Hasselt, Diepenbeek, Belgium
2. Department of Nephrology, Jessa Hospital of Hasselt, Hasselt, Belgium
3. Department of Nephrology, Universitair Ziekenhuis Leuven, Leuven, Belgium
4. Department of Immunology and Microbiology, Faculty of Medicine, Katholieke Universiteit Leuven, Leuven, Belgium