1. Department of Oncology, Skåne University Hospital, Lund, Sweden;
2. Department of Hematology, Rigshospitalet, Copenhagen, Denmark;
3. Department of Hematology, Karolinska University Hospital, Stockholm, Sweden;
4. Department of Hematology, Roskilde Hospital, Roskilde, Denmark;
5. Department of Hematology, Aarhus University Hospital, Aarhus, Denmark;
6. Department of Hematology, Sahlgrenska University Hospital, Gothenburg, Sweden;
7. Department of Hematology, Aalborg University Hospital, Aalborg, Denmark; and
8. Department of Hematology, Herlev University Hospital, Copenhagen, Denmark