1. Heidelberg Myeloma Center, Department of Medicine V University Hospital Heidelberg Germany
2. Seragnoli Institute of Hematology Bologna University School of Medicine Bologna Italy
3. Department of Hematology University Hospital Center of Lille Lille France
4. Department of Hematology Clinica Universidad de Navarra Madrid Spain
5. Oslo Myeloma Center, Department of Haematology Oslo University Hospital, Oslo, Norway, and KG Jebsen Center for B Cell Malignancies University of Oslo Oslo Norway
6. Department of Hematology Erasmus MC Cancer Institute Rotterdam The Netherlands