[1] Univ Hosp Schleswig Holstein, Kiel, Germany
[2] IV Interni Hematol Klin, Hematol Dept 4, Hradec Kralove, Czech Republic
[3] F Hoffmann La Roche Ltd, Basel, Switzerland
[4] Queen Mary Univ London, Barts Canc Inst, Ctr Haemato Oncol, London, England
[5] Univ Hosp Grosshadern, Munich, Germany
[6] Washington Univ, St Louis, MO USA
[7] Genentech Inc, San Francisco, CA 94080 USA
[8] Univ Lyon, Hematol, Lyon, France
[9] British Columbia Canc Agcy, Vancouver, BC V5Z 4E6, Canada
[10] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[11] Georgetown Univ Hosp, Lombardi Comprehens Canc Ctr, Washington, DC 20007 USA