[1] Wake Forest Univ, Bowman Gray Sch Med, Dept Pediat, Med Genet Sect, Winston Salem, NC 27157 USA
[2] Wake Forest Univ, Bowman Gray Sch Med, Dept Canc Biol, Winston Salem, NC 27157 USA
[3] Univ Alabama Birmingham, Hematol Oncol Sect, Birmingham, AL USA
[4] Greensboro Pathol Associates, Moses H Cone Mem Hosp Syst, Greensboro, NC USA