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