[1] Hosp Univ La Fe, Spanish MDS Cooperat Grp, Valencia 46026, Spain
[2] Hosp Univ La Fe, Dept Hematol, Valencia 46026, Spain
[3] Univ Dusseldorf, Dept Hematol Oncol & Clin Immunol, D-40225 Dusseldorf, Germany
[4] Policlin San Matteo, Fdn Ist Ricovero & Cura Carattere Sci, Dept Hematol Oncol, I-27100 Pavia, Italy
[5] Univ Pavia, I-27100 Pavia, Italy
[6] Hosp Clin Barcelona, Dept Hematol, Barcelona, Spain
[7] Hosp del Mar, Serv Patol, Lab Citol Hematol, Barcelona, Spain
[8] Hosp del Mar, Res Inst, Barcelona, Spain
[9] Univ Oviedo, Hosp Cent Asturias, Dept Hematol, E-33080 Oviedo, Spain
[10] Hosp Badalona Germans Trias & Pujol, Dept Hematol, Badalona, Spain
[11] Jose Carreras Leukemia Res Inst, Inst Catala Oncol, Badalona, Spain
[12] Hosp Morales Meseguer, Dept Hematol, Murcia, Spain
[13] Hosp Univ Vall DHebron, Dept Hematol, Barcelona, Spain
[14] Univ Dusseldorf, Inst Human Genet, Dusseldorf, Germany