[1] Hosp Clin Univ Salamanca, Serv Hematol, Salamanca 37007, Spain
[2] Hosp Puerta Hierro, Madrid, Spain
[3] Hosp 12 Octubre, E-28041 Madrid, Spain
[4] Hosp Santa Creu & Sant Pau, Barcelona, Spain
[5] Inst Catala Oncol, Barcelona, Spain
[6] Hosp Badalona Germans Trias & Pujol, Badalona, Spain
[7] Hosp Segur Social Frontera, Andalucia, Spain
[8] Hosp La Fe Valencia, Valencia, Spain