. . . . . . . "[Studies eligible for this meta-analysis were searched in the PubMed, Embase, and CNKI by using the keywords 'tumor necrosis factor', 'TNF', '252A>G', 'rs909253', 'polymorphism', 'polymorphisms', 'variant', 'SNP', combined with 'migraine' or 'migraine with aura (MA)' or 'migraine without aura (MO)'.]. 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 . "2017-10-17T13:16:49+02:00"^^ . . . . . . . . . . . "v5.0.0.0" . "v5.0.0" .