1. Department of Hematology University Hospital Essen Essen Germany
2. Oncological Practice Lehrte Germany
3. Vivantes Medical Care Center at Urban Berlin Germany
4. Center for Oncology and Urology at Rostock Rostock Germany
5. Oncological Practice Heilbronn Germany
6. Practice for Internal Oncology and Hematology Cologne Germany
7. Oncological Practice Stuttgart Germany
8. Roche Pharma AG Grenzach‐Wyhlen Germany
9. Practice for Hematology and Oncology Magdeburg Germany