[1] Canc Res UK London Res Inst, Mammalian Genet Lab, London WC2A 3LY, England
[2] Kings Coll London, Sch Med, London SE1 1UL, England
[3] Mayo Clin, Coll Med, Dept Pediat & Adolescent Med, Rochester, MN 55905 USA
[4] Mayo Clin, Coll Med, Dept Biochem & Mol Biol, Rochester, MN 55905 USA
[5] Fritz Lipmann Inst eV, Leibniz Inst Age Res, D-07745 Jena, Germany
[6] Univ Jena, Fac Med, Res Grp Mol Aging, Jena, Germany
[7] Univ Cologne, Fac Med, Inst Genome Stabil Ageing & Dis, D-50931 Cologne, Germany
[8] Univ Cologne, Inst Genet & Syst Biol Cologne, Cologne Excellence Cluster Cellular Stress Respon, D-50674 Cologne, Germany