1. Division of Clinical Immunology, Karolinska Institutet, Huddinge University Hospital, Stockholm, Sweden.
2. Department of Internal Medicine 5, Haematology and Oncology, University of Erlangen-Nuremberg, Nuremberg, Germany.
3. Division of Haematology, Department of Medicine at Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden.
4. Department of Clinical Pathology and Cytology, Karolinska University Hospital Huddinge, Stockholm, Sweden.
5. Department of Women's and Children's Health, The Childhood Cancer Research Unit, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden.
6. Department of Medicine, Centre for Infectious Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden.
7. Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden.