[1] Childrens Hosp, Dept Med, Div Pediat Hematol Oncol, Boston, MA 02115 USA
[2] Dana Farber Canc Inst, Boston, MA 02115 USA
[3] Harvard Univ, Sch Med, Dept Biol Chem & Mol Pharmacol, Boston, MA 02115 USA
[4] Massachusetts Gen Hosp, Ctr Canc, Boston, MA 02114 USA
[5] Massachusetts Gen Hosp, Ctr Regenerat Med, Boston, MA 02114 USA
[6] Massachusetts Gen Hosp, Dept Stem Cell & Regenerat Biol, Boston, MA 02114 USA
[7] Harvard Univ, Dept Mol & Cellular Biol, Cambridge, MA 02138 USA
[8] Univ Washington, Div Hematol Oncol, Dept Pediat, Seattle, WA 98109 USA
[9] Fred Hutchinson Canc Res Ctr, Seattle, WA 98109 USA
[10] Univ Med Ctr Hamburg Eppendorf, Dept Biochem & Mol Biol Mol Cell Biol 2, D-20246 Hamburg, Germany
[11] Stowers Med Inst, Boston, MA 02115 USA
[12] Harvard Stem Cell Inst, Boston, MA 02115 USA
[13] Brigham & Womens Hosp, Div Hematol, Boston, MA 02115 USA
[14] Childrens Hosp, Howard Hughes Med Inst, Boston, MA 02115 USA