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Pedigree of family 11 presented with the GJB2 genotypes. Analyses were performed for the numbered subjects. ''+'' denotes that no GJB2 mutations were detected; ''nt'' – not tested. Ethnic affiliation of the parents: I-1 was Altaian; I-2, I-3, father of II-1 and father of III-1 were Russians; II-3 was of mixed ethnicity (Russian/Tatar).
