1. Department I of Internal Medicine, Division of Infectious Diseases, University of Cologne, Cologne, Germany
2. Faculty of Medicine, Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
3. Faculty of Medicine and University Hospital of Cologne, Institute for Medical Microbiology, Immunology, and Hygiene, University of Cologne, Cologne, Germany
4. German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany