1. Department of Internal Medicine Sanford School of Medicine University of South Dakota Sioux Falls South Dakota USA
2. Department of Internal Medicine John H Stroger Jr Hospital of Cook County Chicago Illinois USA
3. Multiple Myeloma and Amyloidosis Program Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center New York New York USA
4. Myeloma Center, Winthrop P. Rockefeller Cancer Institute University of Arkansas for Medical Sciences Little Rock Arkansas USA