[1] Romagnolo Santa Maria delle Croci Hosp, Ist Oncol, Dept Hematol Oncol, Ravenna, Italy
[2] Ankara Univ, Sch Med, Dept Hematol Oncol, TR-06100 Ankara, Turkey
[3] Univ Hosp, Inst Med Oncol & Hematol, Nurnberg, Germany
[4] Univ Zurich Hosp, Dept Oncol, CH-8091 Zurich, Switzerland
[5] Univ Hosp, Dept Hematol Oncol, Berlin, Germany
[6] Univ Hosp, Dept Med, Div Haematol Oncol, Dresden, Germany
[7] Univ Hosp Kralovske Vinohrady, Dept Clin Hematol, Prague, Czech Republic
[8] Ist Oncol Romagnolo, Unit Biostat & Clin Trials, Forli, Italy