1. Department of Infectious Diseases, Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
2. Translational Immunology Unit, Department of Medicine; Karolinska Institutet; Stockholm Sweden
3. Department of Internal Medicine, Hematology Section; Sahlgrenska University Hospital; Gothenburg Sweden
4. German CLL Study Group, Department I of Internal Medicine; University Hospital of Cologne; Cologne Germany
5. Department of Clinical Immunology; University of Oxford; Oxford UK