34 reported a significant trend in the opposite direction, where it was found that a SLC6A3 3′-UTR VNTR 9-repeat genotype was more common in the non-abstinence group than in the abstinence group ( χ 2 = 7.76; P = 0.01).
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Meta-analysis reveals significant association of 3'-UTR VNTR in SLC6A3 with smoking cessation in Caucasian populations.
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