1. Department of Medical Microbiology; Leiden University Medical Center; Leiden The Netherlands
2. Department of Rheumatology; Leiden University Medical Center; Leiden The Netherlands
3. Department of Pathology; Leiden University Medical Center; Leiden The Netherlands
4. Department of Nephrology; Leiden University Medical Center; Leiden The Netherlands
5. Department of Infectious Diseases; Leiden University Medical Center; Leiden The Netherlands
6. Department of Medical Microbiology; University Medical Center Utrecht; Utrecht The Netherlands