1. Department of Haematology, Aalborg University Hospital, Aalborg, Denmark;
2. Department of Clinical Medicine, Aalborg University, Aalborg, Denmark;
3. BC Cancer Centre for Lymphoid Cancer and University of British Columbia, Vancouver, BC, Canada;
4. Department of Haematology, Copenhagen University Hospital, Copenhagen, Denmark;
5. Department of Haematology, Aarhus University Hospital, Aarhus, Denmark;
6. Department of Haematology, Odense University Hospital, Odense, Denmark;
7. Department of Haematology, Roskilde Sygehus, Roskilde, Denmark;
8. Department of Haematology, Herlev and Gentofte Hospital, Copenhagen, Denmark