1 Oslo Myeloma Center, Department of Hematology, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, University of Oslo, Oslo, Norway; Department of Oncology, Dana-Farber Cancer Institute, Boston, MA. Electronic address: hanne_norseth@dfci.harvard.edu.
2 Oslo Myeloma Center, Department of Hematology, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, University of Oslo, Oslo, Norway.
3 Oslo Myeloma Center, Department of Hematology, Oslo University Hospital, Oslo, Norway.