1. Department of Biomedicine, University of Bergen, Bergen, Norway;
2. Institute of Medicine, Hematology Section and
3. Department of Internal Medicine, Haukeland University Hospital, Bergen, Norway;
4. Department of Medical Protein Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium;
5. Department of Biochemistry, Ghent University, Ghent, Belgium; and
6. Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Bergen, Norway