1. Department of Hematology Aarhus University Hospital Aarhus Denmark
2. Department of Hematology, Rigshospitalet Copenhagen Denmark
3. The Research Unit for General Practice and the Section of General Practice, Department of Public Health University of Copenhagen Copenhagen Denmark
4. Danish Cancer Society Research Center, Danish Cancer Society Copenhagen Denmark
5. Department of Clinical Oncology and Palliative Care Zealand University Hospital Roskilde Denmark
6. Institute of Clinical Medicine Copenhagen University Copenhagen Denmark
7. Department of Hematology Odense University Hospital Odense Denmark
8. Department of Clinical Epidemiology Aarhus University Hospital Aarhus Denmark