1. Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Halle, Germany
2. Charité, Institute of Pathology, Berlin, Germany
3. Centre for Basic Medical Research, Martin Luther University Halle-Wittenberg, Halle, Germany
4. Institute of Pathology, Martin Luther University Halle-Wittenberg, Halle, Germany
5. Department of Internal Medicine 5, Hematology and Oncology, University of Erlangen-Nuremberg, Erlangen, Germany
6. Karolinska Institutet, CCK, Stockholm, Sweden