1 Cancer and Hematology Center, Vestfold Hospital Trust, Tønsberg, Norway.
2 Medical Department, Drammen Hospital, Vestre Viken Trust, Drammen, Norway.
3 Department of Pathology, and Institute of Clinical Medicine, The Medical Faculty, Oslo University Hospital, University of Oslo, Oslo, Norway.
4 Department of Hematology, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
5 Oslo Centre of Biostatistics and Epidemiology Department for Research and Education, Division of Mental Health and Addiction Oslo University Hospital, Oslo, Norway.
6 Department of Hematology, Lovisenberg Hospital, Oslo, Norway.