. . . . . . . . . . . . "[Klinefelter's syndrome, mutation of cystic fibrosis transmembrane conductance regulator (CFTR) gene, which causes cystic fibrosis, and mutation of azoospermia factor zone (AZF) of Y-chromosome are among the most frequent genetic causes of severe oligozoospermia and azoospermia.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2014-02-25"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2014-10-02T12:35:21+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .