1. Department of Medicine; Division of Hematology; Karolinska University Hospital Solna and Karolinska Institutet; Stockholm Sweden
2. Department of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
3. Department of Medicine Solna; Clinical Epidemiology Unit; Karolinska Institutet and Karolinska University Hospital Solna; Stockholm Sweden
4. Department of Immunology; Genetics and Pathology; Clinical and Experimental Oncology; Uppsala University and Uppsala Akademiska Hospital; Uppsala Sweden