. . . . . . . . . . . . "[To determine whether the adenine (A)-guanine (G) substitution polymorphism at position - 308 on the tumor necrosis factor-alpha gene confers susceptibility to COPD or to the development of a more severe form of disease.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2013-07-06"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2014-10-02T12:32:23+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .