1. Landspítali, National University Hospital Reykjavík Iceland
2. Faculty of Medicine University of Iceland ReykjavíkIceland
3. Skåne, University Hospital Malmö Malmö Sweden
4. Department of Medicine Division of Haematology Karolinska University Hospital and Karolinska Institutet Stockholm Sweden
5. Division of Cancer Epidemiology and Genetics National Cancer Institute National Institutes of Health Bethesda MDUSA
6. Myeloma Service Division of Hematology Oncology Department of Medicine Memorial Sloan‐Kettering Cancer Center New York NY USA
7. Department of Haematology Landspitali, National University Hospital Reykjavik Iceland