No evidence of association between 118A>G OPRM1 polymorphism and heroin dependence in a large Bulgarian case-control sample.
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Nikolov MA, et al.
Drug Alcohol Depend. 2011 Aug 1;117(1):62-5. doi: 10.1016/j.drugalcdep.2010.12.026. Epub 2011 Jan 31.
Drug Alcohol Depend. 2011.
PMID: 21277709
Free PMC article.