[1] Childrens Hosp, Dana Farber Canc Inst, Div Hematol Oncol, Boston, MA 02115 USA
[2] Childrens Hosp, Dana Farber Canc Inst, Clin Res Program, Boston, MA 02115 USA
[3] Harvard Univ, Sch Med, Boston, MA 02115 USA
[4] Univ Texas, SW Med Ctr, Dept Pediat, Dallas, TX USA
[5] Cornell Univ, Weill Med Coll, New York, NY USA
[6] Baylor Coll Med, Houston, TX 77030 USA
[7] Emory Univ, Sch Med, Atlanta, GA USA
[8] St Johns Hosp, Van Eslander Canc Ctr, Detroit, MI USA
[9] Univ Calif Los Angeles, Mattel Childrens Hosp, San Francisco, CA USA
[10] Stanford Univ, Stanford, CA 94305 USA