1. Department of Haematology, Oncology, Transplantation; University Medical Centre; Ernst-Moritz-Arndt University; Greifswald Germany
2. Institute of Immunology and Transfusion Medicine; University Medical Centre; Ernst-Moritz-Arndt University; Greifswald Germany
3. Department of Haematology, Oncology; HELIOS Klinikum Bad Saarow; Bad Saarow Germany
4. Department of Internal Medicine; Wolgast Hospital; Wolgast Germany