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Flowchart of literature search and selection criteria for systematic review and meta‐analysis. fMRI, functional magnetic resonance imaging; rs‐fMRI, resting‐state fMRI; MRS, magnetic resonance spectrum; PET, positron emission tomography; EEG, electroencephalogram; fNIR, functional near‐infrared imaging; DTI, diffusion tensor imaging; VBM, voxel‐based morphometry; GM, gray matter; WM, white matter
