[1] Yale Univ, Sch Med, Dept Internal Med, Sect Hematol, New Haven, CT 06510 USA
[2] Yale Univ, Sch Med, Yale Comprehens Canc Ctr, New Haven, CT USA
[3] Yale Univ, Sch Med, Dept Mol Biophys & Biochem, New Haven, CT 06510 USA
[4] Yale Univ, Sch Med, Dept Cell Biol, New Haven, CT 06510 USA
[5] CNR, Inst Biophys, Trento, Italy
[6] Yale Univ, Sch Med, Yale Stem Cell Ctr, New Haven, CT USA