1. Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern , Bern , Switzerland
2. Department of Medical Oncology, Inselspital, Bern University Hospital , Bern , Switzerland
3. Department of Clinical Chemistry, Inselspital, Bern University Hospital and University of Bern , Bern , Switzerland
4. Department of Clinical Microbiology, Institute for Infectious Diseases, University of Bern , Bern , Switzerland