1. Department of Medicine III; University Hospital; LMU Munich Munich Germany
2. Department of Internal Medicine I; University Hospital of Homburg; Homburg Germany
3. Department of Medicine I; University Hospital of Cologne; Cologne Germany
4. Hemato-Oncology Department; Diderot University; Hôpital Saint-Louis Paris France
5. Department of Hematology/Oncology; University Hospital Oldenburg; Oldenburg Germany
6. Hematology; Faculty of Medical Sciences; Groningen Netherlands