. . . . . . . . . . . . "[Previous studies, although not all, have demonstrated associations between the DRD2 TaqI and the DRD4 exon III variable number tandem repeat (VNTR) polymorphisms and substance dependence.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2016-02-19"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2016-05-13T12:44:23+02:00"^^ . . . . . . . . . . . "v4.0.0.0" . "v4.0.0" .