1. Department of Haematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Poland;
2. Department of Medicine, University Hospital La Fe in Valencia, Spain;
3. CIBERONC, Carlos III Institute, Madrid, Spain;
4. Central University Hospital in Asturias, Oviedo, Spain;
5. University Hospital, Groningen, The Netherlands;
6. University Hospital de la Santa Creu i Sant Paul in Barcelona (Hospital of the Holy Cross and Saint Paul), Universitat Autònoma de Barcelona, Barcelona, Spain;
7. University Hospital Virgen del Rocio in Sevilla, Spain;
8. University Hospital of Salamanca, Salamanca, Spain;
9. Silesian Medical University, Katowice, Poland;
10. Hospital Clinic in Barcelona, Spain;
11. Hospital San Pedro in Alcántara, Cáceres, Spain;
12. Insular University Hospital in Gran Canaria, Las Palmas de Gran Canaria, Spain;
13. General Hospital in Alicante, Spain;
14. University Hospital in Valencia, Spain;
15. University Hospital Vall d´Hebron, Barcelona, Spain;
16. General Hospital in Albacete, Spain,
17. Fundaleu, Buenos Aires, Argentina;
18. Hospital 12 de Octube in Madrid, Madrid, Spainx>/x>
19. Univeristy Hospital Virgen de la Victoria, Malaga, Spain;
20. University Hospital of Santiago de Compostela, Spain;
21. Hospital Puerta de Hierro, Madrid, Spain;
22. ICO University Hospital Germans Trias i Pujol; Jose Carreras Research Institute, Badalona, Spain;
23. Hospital Joan XXIII, Tarragona, Spain;
24. Erasmus University Medical Center, Rotterdam, The Netherlands