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Chikhi L, Destro-Bisol G, Bertorelle G, Pascali V, Barbujani G.Chikhi L, et al. Among authors: barbujani g.Proc Natl Acad Sci U S A. 1998 Jul 21;95(15):9053-8. doi: 10.1073/pnas.95.15.9053.Proc Natl Acad Sci U S A. 1998.PMID: 9671803Free PMC article.