1. Department of Immunology Oslo University Hospital Oslo Norway
2. KG Jebsen Center for B‐cell Malignancies, Institute of Clinical Medicine, Department of Immunology University of Oslo Oslo Norway
3. Department of Laboratory Medicine University of California San Francisco San Francisco California USA
4. Department of Biomedical and Health Sciences University of Vermont Burlington Vermont USA
5. B Cell Receptor Signaling Group (BCRSG), Department of Immunology Oslo University Hospital Oslo Norway
6. Department of Haematology Oslo University Hospital Oslo Norway
7. Helen Diller Family Comprehensive Cancer Center University of California San Francisco San Francisco California USA