[1] Univ Calif Los Angeles, Sch Med, Internal Med Div Heme Onc, Los Angeles, CA USA
[2] Sint Augustinus Hosp, Dept Med Oncol, Antwerp, Belgium
[3] Semmelweis Univ, Dept Internal Med 3, Budapest, Hungary
[4] Hosp San Raffaele, Dept Med Oncol, I-20132 Milan, Italy
[5] SUNY Stony Brook, Div Hematol & Oncol, Stony Brook, NY 11794 USA
[6] Clin Oncol, Porto Alegre, RS, Brazil
[7] Genentech Inc, Prod Dev Oncol, San Francisco, CA 94080 USA
[8] Genentech Inc, Prod Dev Biostat, San Francisco, CA 94080 USA
[9] Mayo Clin, Div Hematol Oncol, Jacksonville, FL USA