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. 2021 Sep 3;32:102811. doi: 10.1016/j.nicl.2021.102811

Fig. 2.

Fig. 2

PRISMA flow chart of study screening and selection process. This review focused on the qualitative synthesis for included studies since there was a limited scope for a meta-analysis with the high heterogeneity in study design, methodology, and neuroimaging modalities.