1. Department of Medicine, Division of Hematology, Karolinska University Hospital, Solna and Karolinska Institutet, Stockholm, Sweden
2. National Cancer Institute, National Institutes of Health, Bethesda, MD
3. Department of Medicine, Section of Hematology and Coagulation, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Department of Medicine, Section of Hematology, Umea University Hospital, Umea, Sweden
5. Department of Medicine, Section of Hematology, Malmo University Hospital, Malmo, Sweden