1 K.G. Jebsen Center for Myeloma Research, Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
2 Department of Immunology and Transfusion Medicine, St. Olav's University Hospital, Trondheim, Norway.
3 Department of Hematology, St. Olav's University Hospital, Trondheim, Norway.
4 CEMIR (Centre of Molecular Inflammation Research), Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.