Human kappa opioid receptor gene (OPRK1) polymorphism is associated with opiate addiction.
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Gerra G, et al. Among authors: leonardi c.
Am J Med Genet B Neuropsychiatr Genet. 2007 Sep 5;144B(6):771-5. doi: 10.1002/ajmg.b.30510.
Am J Med Genet B Neuropsychiatr Genet. 2007.
PMID: 17373729