1 ONKOLOGIKUM Frankfurt am Museumsufer, Frankfurt, Germany.
2 Hematology Unit, Ospedale dell'Angelo e Ospedale SS. Giovanni e Paolo, Mestre-Venezia, Italy.
3 Institut Universitaire d'Hematologie Hopital St Louis, Paris, France.
4 Cancer Institute, University College London, London, UK.
5 Department of Clinical Hematology, ICO-Hospital Germans Trias i Pujol, Jose Carreras Research Institute, Universitat Autonoma de Barcelona, Barcelona, Spain.