1. Division of Infectious Diseases Department of Medicine II Faculty of Medicine University Medical Center Albert‐Ludwigs‐University Freiburg Germany
2. Division of Infectious Diseases and Hospital Epidemiology University Hospital Basel University of Basel Basel Switzerland
3. Division of Hematology, Oncology, and Stem Cell Transplantation/Department Faculty of Medicine University Medical Center Albert‐Ludwigs‐University Freiburg Germany
4. Institute for Infection Prevention and Hospital Epidemiology Faculty of Medicine University Medical Center Albert‐Ludwigs‐University Freiburg Germany