. . . . . . . "[We conclude [the]seven-repeat allele of the dopamine D4 receptor VNTR is a protective factor for migraine without aura/migraine is a common disorder this may have contributed to positive selection on this dopamine D4 receptor exon 3 VNTR allele]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2009-03-31"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2017-10-17T13:12:06+02:00"^^ . . . . . . . . . . . "v5.0.0.0" . "v5.0.0" .