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Exemplar correlations between ACC mGluR5 availability and QSU brief and relief subscale scores in PTSD NU (displayed in blue) and NU (displayed in gray).
Abbreviations: ACC, anterior cingulate cortex; mGluR5, metabotropic glutamate receptor 5; QSU, Questionnaire of Smoking Urges; PTSD, posttraumatic stress disorder; NU, nicotine user.
