1 Department of Nephrology and Hypertension, Inselspital, Bern University Hospital and Department of Biomedical Research, University of Bern, Bern, Switzerland.
2 Institute of Infectious Diseases, University of Bern, Bern, Switzerland.
3 Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
4 Department of Rheumatology and Immunology, Inselspital, Bern University Hospital and Department of Biomedical Research, University of Bern, Bern, Switzerland.