[1] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[2] Univ Alabama Birmingham, Comprehens Canc Ctr, Birmingham, AL 35294 USA
[3] Dana Farber Canc Inst, Boston, MA 02115 USA
[4] Roswell Pk Canc Inst, Dept Med, Buffalo, NY 14263 USA
[5] ImmunoGen Inc, Waltham, MA USA
[6] Univ Texas MD Anderson Canc Ctr, Dept Leukemia, Houston, TX 77030 USA