[1] Ohio State Univ, Arthur James Comprehens Canc Ctr, Columbus, OH 43210 USA
[2] Univ Calif San Diego, Div Hematol Oncol, San Diego, CA 92103 USA
[3] Univ Texas, MD Anderson Canc Ctr, Houston, TX 77030 USA
[4] Johns Hopkins Univ, Sidney Kimmel Comprehens Canc Ctr, Baltimore, MD USA
[5] Univ Alabama, Wallace Tumor Inst, Birmingham, AL USA
[6] Biogen Idec, San Diego, CA USA