1. Faculty of Medicine University of Iceland Reykjavik Iceland
2. Department of Hematology, Oncology, Blood and Marrow Transplantation University of Iowa Hospitals and Clinics Iowa City IA USA
3. Department of Medicine Division of Hematology Karolinska University Hospital and Karolinska Institutet Stockholm Sweden
4. Department of Hematology Skåne University Hospital Malmö Sweden
5. Myeloma Service Memorial Sloan‐Kettering Center New York NY USA
6. Division of Pathology Department of Clinical Sciences Lund University Lund Sweden
7. Myeloma Program Sylvester Comprehensive Cancer Center University of Miami Miami FL USA