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. 2022 May 4;35:44–55. doi: 10.1016/j.ctro.2022.04.013

Fig. 1.

Fig. 1

PRISM flow chart of study selection. After selection and filtering of a total of 4883 studies, 215 studies were included in this study, of which 20 clinical studies were evaluated for inclusion in the subsequent qualitative analysis and no clinical study was suited for meta-analysis. 49 preclinical studies were qualitatively analysed, of which 29 studies were included in the meta-analysis.