1. Instituto de Investigación Biomédica de Salamanca (IBSAL), Cancer Research Center-IBMCC (USAL-CSIC), CIBERONC, University Hospital of Salamanca, 37007 Salamanca, Spain
2. Department of Hematology, University Hospital Dr. José Molina Orosa (Lanzarote, Canary Islands), 35500 Las Palmas, Spain
3. Department of Hematology, University Hospital of León, 24071 León, Spain
4. Department of Hematology, University Hospital of Segovia, 40002 Segovia, Spain
5. Department of Hematology, University Hospital of Ávila, 05004 Ávila, Spain
6. Department of Hematology, University Hospital of Burgos, 09006 Burgos, Spain
7. Department of Hematology, University Hospital of Rio Carrión (Palencia), 34005 Palencia, Spain
8. Department of Hematology, University Clinical Hospital of Valladolid, 47003 Valladolid, Spain
9. Department of Hematology, University Hospital of Rio Hortega (Valladolid), 47012 Valladolid, Spain
10. Department of Hematology, University Hospital of Virgen de la Concha (Zamora), 49022 Zamora, Spain
11. Department of Hematology, University Hospital of Soria, 42005 Soria, Spain