[1] McGill Univ, Dept Biochem, Montreal, PQ H3G 1Y6, Canada
[2] McGill Univ, Dept Oncol, Montreal, PQ H3G 1Y6, Canada
[3] McGill Univ, Mol Oncol Grp, Dept Med, Montreal, PQ H3G 1Y6, Canada
[4] MGH Canc Ctr, Charlestown, MA 02129 USA
[5] Univ Med & Dent New Jersey, Robert Wood Johnson Med Sch, Dept Biochem, Howard Hughes Med Inst,Div Nucle Acids Enzymol, Piscataway, NJ 08854 USA
[6] Univ N Carolina, Dept Biochem & Biophys, Lineberger Comprehens Canc Ctr, Chapel Hill, NC 27599 USA
[7] Univ S Florida, Mol Oncol Program, H Lee Moffit Canc Ctr & Res Inst, Tampa, FL 33612 USA
[8] Harvard Univ, Harvard Microchem Facil, Cambridge, MA 02138 USA