1. Myeloma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
2. Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland
3. Cancer Epidemiology and Health Services Research Group, Centre for Public Health, Queen’s University, Belfast, Northern Ireland, United Kingdom
4. Division of Hematology, Department of Medicine, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
5. Multiple Myeloma Section, National Cancer Institute, Bethesda, Maryland
6. Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
7. Department of Hematopathology, Memorial Sloan Kettering Cancer Center, New York, New York
8. Faculty of Medicine, University of Iceland, Reykjavik, Iceland
9. Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
10. Myeloma Section, Department of Medicine, University Hospital of Malmo, Malmo, Sweden