. . . . . . . . . . . . "[Chi-squared tests for association revealed that the genotype distributions of SNPs rs1997794 (P = 0.019) and rs1022563 (P = 0.006) in the promoter and 3' region of PDYN, respectively, were found to be associated with opioid dependence.]. 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 . "2014-10-02T12:36:25+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .