1. Institute of Immunology, University of Kiel and University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany
2. Institute of Immunology, Medical University Hannover, Hannover, Germany
3. Department of Hematology, University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany
4. Department of Clinical Immunology, Medical University of Lublin, Lublin, Poland