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Background The −308 G/A polymorphism in TNF-α gene has been extensively investigated for association to asthma; however, results of different studies have been inconsistent. The aim of this study is to comprehensively evaluate the genetic risk of −308 G/A polymorphism in TNF-α gene for asthma. Methods A meta-analysis was carried out to analyze the association between the −308 G/A polymorphism TNF-α...
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