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Voxel-based morphometry (VBM) results of gray matter (GM) atrophy in OPVHs patients compared with CN. (A) Statistical parametric mapping (SPM) results in various brain regions. (B) GM atrophy was found in the right supramarginal gyrus, right angular gyrus, right middle temporal gyrus, right anterior cingulum and left insula compared to the CN (P < 0.001, uncorrected, with 30-voxel clustering criteria).
