1. Institute of Immunology Christian‐Albrechts University of Kiel and University Hospital Schleswig‐Holstein (UKSH) Campus Kiel Kiel Germany
2. Department of Internal Medicine II, Hematology and Oncology Christian‐Albrechts University of Kiel and University Hospital Schleswig‐Holstein (UKSH) Campus Kiel Kiel Germany
3. Department of Neurosurgery Christian‐Albrechts University of Kiel and University Hospital Schleswig‐Holstein (UKSH) Campus Kiel Kiel Germany
4. Department of Oto‐Rhino‐Laryngology Christian‐Albrechts University of Kiel and University Hospital Schleswig‐Holstein (UKSH) Campus Kiel Kiel Germany