[1] Hosp Univ Salamanca, Serv Hematol, Dept Hematol, Salamanca 37007, Spain
[2] UCL Hosp, London, England
[3] Hosp Santa Creu & Sant Pau, E-08025 Barcelona, Spain
[4] Birmingham Heartlands Hosp, Birmingham B9 5ST, W Midlands, England
[5] Univ Hosp, Birmingham, W Midlands, England
[6] Hosp Clin Valencia, Valencia, Spain
[7] Christie Hosp, Manchester, Lancs, England
[8] Hosp Clin Barcelona, Barcelona, Spain
[9] Guys Hosp, London SE1 9RT, England
[10] Hosp Jerez, Cadiz, Spain
[11] Leicester Royal Infirm, Leicester, Leics, England