. 2021 Jun 25;8:681469. doi: 10.3389/fmed.2021.681469
Copyright © 2021 Dadashi, Khaleghnejad, Abedi Elkhichi, Goudarzi, Goudarzi, Taghavi, Vaezjalali and Hajikhani.
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Figure 1.
Flow chart of study selection for inclusion in the systematic review and meta-analysis.