1. Center for Myeloma Research, Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
2. Department of Immunology and Transfusion Medicine, St. Olav's University Hospital, Trondheim, Norway
3. Laboratory Clinic, St. Olav's University Hospital, Trondheim, Norway
4. Department of Hematology, St. Olav's University Hospital, Trondheim, Norway