[1] Univ Penn, Sch Med, Abramson Family Canc Res Inst, Dept Pathol & Lab Med, Philadelphia, PA 19104 USA
[2] Ewha Womans Univ, Div Mol Life Sci, Seoul 120750, South Korea
[3] Ewha Womans Univ, Ctr Cell Signaling Res, Seoul 120750, South Korea
[4] Chonnam Natl Univ, Sch Med, Med Res Ctr Gene Regulat, Kwangju 501190, South Korea