1. Department of Haematology; Skane University Hospital; Malmo Sweden
2. Department of Medicine; Division of Hematology; Karolinska University Hospital and Karolinska Institutet; Stockholm Sweden
3. Department of Hematology; Sahlgrenska University Hospital and Institution of Internal Medicine; Sahlgrenska Academy at University of Gothenburg; Gothenburg Sweden
4. Department of Medicine; University of Iceland; Reykjavik Iceland
5. Department of Medicine; Section on General Internal Medicine; Wake Forest School of Medicine; Winston Salem NC USA
6. Myeloma Service; Division of Hematologic Oncology; Memorial Sloan-Kettering Cancer Center; New York NY USA