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Correlation results between gray matter alteration and duration and BQDS. Pearson correlation analyses reveals that gray matter volumes of the left DLPFC, the right rACC showed a negative correlation with duration of BQD, midbrain volume were negatively correlated with BQD scores in BQD patients. (BQD=Betel quid dependence; BQDS=Betel quid dependence score; rACC=rostral anterior cingulate cortex; MFG=Medial frontal gyrus; P < 0.05).
