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Flachsbart F, Franke A, Kleindorp R, Caliebe A, Blanché H, Schreiber S, Nebel A (2010). "Investigation of genetic susceptibility factors for human longevity - a targeted nonsynonymous SNP study". Mutat. Res. 694 (1–2): 13–9. doi:10.1016/j.mrfmmm.2010.08.006. PMID20800603.