1. 1 Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
2. 2 Institute for Medical Microbiology, Immunology and Hygiene, University Hospital of Cologne, Cologne, Germany
3. 3 First Department of Internal Medicine, University of Cologne, Cologne, Germany
4. 4 German Centre for Infection Research (DZIF), Partner site Bonn-Cologne, Germany
5. 5 Clinical Trials Centre Cologne, ZKS Köln, BMBF 01KN1106, Center for Integrated Oncology CIO Köln Bonn, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
6. 6 3rd Department of Internal Medicine, Mannheim University Hospital, University of Heidelberg, Mannheim, Germany
7. 7 Department of Bone Marrow Transplantation (AHE), West German Cancer Center, University Hospital Essen, Essen, Germany
8. 8 Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
9. 9 Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, The Netherlands