1. Department of General Internal and Emergency Medicine, University Department of Medicine, Kantonsspital Aarau, Aarau, Switzerland
2. Faculty of Medicine, University of Basel, Basel, Switzerland
3. Department of Infectious Diseases, University Department of Medicine, Kantonsspital Aarau, Aarau, Switzerland
4. Department of Laboratory Medicine, Kantonsspital Aarau, Aarau, Switzerland