1. Department of Public Health and Clinical Medicine; Umeå University; Umeå Sweden
2. Regional Cancer Centre; Uppsala-Örebro; Uppsala Sweden
3. Department of Medical Science and Division of Hematology; University Hospital; Uppsala Sweden
4. Department of Hematology; Karolinska University Hospital and Department of Medicine; Karolinska Institutet; Stockholm Sweden
5. Department of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
6. Department of Hematology and Vascular Disorders; Skåne University Hospital; Lund Sweden