[1] Paterson Inst Canc Res, Manchester M20 4BX, Lancs, England
[2] Christie Hosp NHS Trust, Manchester M20 4BX, Lancs, England
[3] St Anna Hosp, Inst Hematol, Ferrara, Italy
[4] Policlin Borgo Roma, Div & Cattedra Ematol, Verona, Italy
[5] Herlev Hosp, Dept Hematol, Herlev, Denmark
[6] Southmead Hosp, Dept Transplant Sci, Bristol, Avon, England
[7] Roskilde Univ, DK-4000 Roskilde, Denmark
[8] Univ Hosp, Udine, Italy