[1] Univ Barcelona, Hosp Clin, Inst Hematol & Oncol, Dept Hematol, Barcelona, Spain
[2] Hosp Clin Barcelona, Spanish MDS Cooperat Grp, Barcelona, Spain
[3] Hosp Virgen del Rocio, Dept Hematol, Seville, Spain
[4] Hosp Univ Virgen del Rocio, Seville, Spain
[5] Hosp Univ Virgen del Rocio, Dept Hematol, Seville, Spain
[6] IBSAL, Hosp Clin Univ Salamanca, Dept Hematol, Salamanca, Spain
[7] Hosp Clin Univ La Fe, Dept Hematol, Valencia, Spain
[8] Univ Barcelona, Hosp Clin, IDIBAPS, Barcelona, Spain