1. Department of Hematology and Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
2. Department of Haematology, Service des Maladies du Sang, Hôpital Claude Huriez, Lille, France
3. Department of Hematology and Oncology, University Hospital of Tuebingen, Tuebingen, Germany
4. Department of Haematology, Mater Misericordiae University Hospital, University College Dublin, Dublin, Ireland