1. Departments of Hematology and Medicine; The Karolinska University Hospital and Karolinska Institutet; Stockholm Sweden
2. Division of Pathology, Department of Laboratory Medicine; The Karolinska University Hospital and Karolinska Institutet; Stockholm Sweden
3. Centre for Haematology, Imperial College London Faculty of Medicine; St Mary's Hospital; London United Kingdom
4. Clinical Genetics, Department of Molecular Medicine and Surgery; The Karolinska University Hospital and Karolinska Institutet; Stockholm Sweden