1. MDS Unit, Hematology, AOU Careggi, University of Florence, Florence, Italy;
2. Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal;
3. Marien Hospital Düsseldorf, Düsseldorf, Germany;
4. Celgene Corporation, Summit, NJ, USA;
5. Formerly Celgene Corporation, Summit, NJ, USA;
6. Service d’Hématologie Séniors, Hôpital Saint-Louis, Université Paris 7, Paris, France