1. Department of Nephrology, Ghent University Hospital, Gent, Belgium
2. Department of Nephrology, az St.-Blasius Dendermonde, Dendermonde, Belgium
3. Department of General Internal Medicine, Ghent University Hospital, Gent, Belgium
4. Department of Pathology, Leuven University Hospital, Leuven, Belgium
5. Department of Internal Medicine, Leuven University Hospital, Leuven, Belgium
6. Department of Microbiology and Infectious Diseases, az St.-Blasius Dendermonde, Dendermonde, Belgium