[1] Univ Coimbra, Ctr Neurosci & Cell Biol, Coimbra, Portugal
[2] Univ Coimbra, Inst Interdisciplinary Res, Coimbra, Portugal
[3] Boston Childrens Hosp, Div Hematol Oncol, Boston, MA USA
[4] Dana Farber Canc Inst, Boston, MA 02115 USA
[5] Boston Childrens Hosp, Stem Cell Program, Boston, MA USA
[6] Univ Coimbra, Fac Pharm, Coimbra, Portugal
[7] Harvard Med Sch, Harvard Stem Cell Inst, Boston, MA 02115 USA
[8] Univ Coimbra, Fac Med, Coimbra, Portugal