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. Author manuscript; available in PMC: 2021 Oct 1.
Published in final edited form as: Psychiatry Res. 2020 Jul 2;292:113269. doi: 10.1016/j.psychres.2020.113269

Figure 1. METH+ individuals have lower CSF dopamine levels than METH- individuals only among COMT Met/Met genotype carriers.

Figure 1

*p<.05. Error bars represent standard errors. Cohen’s d estimates reflect METH+ vs.METH- group differences within each COMT genotype.