1. Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Bethesda, Maryland, USA
2. Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
3. Epidemiology Branch, National Institute of Environmental Health Sciences, NIH, DHHS, Research Triangle Park, North Carolina, USA
4. Department of Epidemiology, University of Iowa, Iowa City, Iowa, USA
5. Myeloma Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
6. Myeloma Program, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA