[1] Univ Pittsburgh, Inst Canc, Pittsburgh, PA 15260 USA
[2] Univ Pittsburgh, Sch Publ Hlth, Dept Human Genet, Pittsburgh, PA 15260 USA
[3] Univ Pittsburgh, Sch Med, Dept Microbiol & Mol Genet, Pittsburgh, PA 15260 USA
[4] Univ Pittsburgh, Sch Med, Dept Cell Biol, Pittsburgh, PA 15260 USA
[5] Univ Pittsburgh, Vet Serv, Div Lab Anim Res, Pittsburgh, PA 15260 USA
[6] Univ Pittsburgh, Sch Med, Dept Orthopaed Surg, Pittsburgh, PA 15260 USA
[7] Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA