[1] Goethe Univ Frankfurt, Med Klin 2, Abt Haematol, D-60590 Frankfurt, Germany
[2] Hosp St Louis, Paris, France
[3] Policlin S Orsola, Ist Ematol Oncol Med E, Bologna, Italy
[4] Univ Uppsala Hosp, Dept Hematol, Uppsala, Sweden
[5] CHU La Miletrie, Clin Res Ctr, Poitiers, France
[6] Univ Chicago, Chicago, IL 60637 USA
[7] Azienda Osped S Luigi, Dipartimento Med Interna & Ematol, Orbassano, Italy
[8] Fred Hutchinson Canc Res Ctr, Div Clin Res, Seattle, WA 98104 USA
[9] Univ Heidelberg, Med Fak Mannheim, D-6800 Mannheim, Germany
[10] Bristol Myers Squibb Co, Hopewell, NJ USA
[11] Bristol Myers Squibb Co, Wallingford, CT 06492 USA
[12] Stanford Univ, Sch Med, Stanford, CA 94305 USA