1. Hematology Department, University Hospital of Salamanca/Instituto Biosanitario de Salamanca, Salamanca, Spain;
2. Hematology Department, Institut Català d'Oncologia, Hospital Germans Trials i Pujol, Badalona, Spain;
3. Hematology Department, Hospital 12 de Octubre, Madrid, Spain;
4. Hematology Department, Hospital Clínico de Valencia, Valencia, Spain;
5. Hematology Department, Hospital La Paz, Madrid, Spain;
6. Hematology Department, Hospital Ramón y Cajal, Madrid, Spain;
7. Hematology Department, Hospital de Donostia, San Sebastian, Spain;
8. Hematology Department, Hospital Virgen de la Concha, Zamora, Spain;
9. Hematology Department, Hospital Clínico San Carlos, Madrid, Spain;
10. Hematology Department, Hospital Lozano Blesa, Zaragoza, Spain;
11. Hematology Department, Hospital Morales Messeguer, Murcia, Spain;
12. Hematology Department, Institut d’Oncologia Dr Josep Trueta, Girona, Spain;
13. Hematology Department, Hospital General de Segovia, Segovia, Spain;
14. Hematology Department, Hospital Santa Creu i Sant Pau, Barcelona, Spain;
15. Hematology Department, Complejo Hospitalario Universitario de Santiago, Santiago de Compostela, Spain;
16. Hematology Department, Hospital Sont Llatzer, Palma de Mallorca, Spain;
17. Hematology Department, Fundación Hospital de Alcorcon, Madrid, Spain;
18. Hematology Department, Hospital San Pedro de Alcántara, Cáceres, Spain;
19. Hematology Department, Clínica Universidad Navarra, Hematology Department, Centro de Investigación Médica Aplicada, Navarra, Spain; and
20. Hematology Department, Hospital Clinic i Provincial and Institut d’Investigasions Biomediques August Pi i Sunyer, Barcelona, Spain