. . . . . . . "[This study explores the effects of polymorphisms in the nerve growth factor (? polypeptide) gene, NGFB, on the methadone doses required for successful maintenance treatment for heroin addiction.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2017-02-19"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2017-10-17T13:15:00+02:00"^^ . . . . . . . . . . . "v5.0.0.0" . "v5.0.0" .