1. Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
2. Department of Hematology, Aalborg Hospital, Aalborg University, Denmark
3. Department of Biomedicin, Aarhus University, Aarhus, Denmark
4. Clinical Cancer Research Center, Aalborg University Hospital, Denmark
5. Department of Clinical Medicine, Aalborg University, Denmark
6. Department of Chemistry and Biotechnology, Aalborg University, Denmark
7. Division of Endocrinology, Metabolism and Nutrition, Endocrine Research Unit, Mayo Clinic, Rochester, NY, USA