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. 2020 May 18;31(5):e67. doi: 10.3802/jgo.2020.31.e67

Fig. 2. Methodological quality summary: Review authors' judgements about each methodological quality item for each RCT (A) and observational studies (B). Green: low risk of bias; yellow: unclear risk of bias; red: high risk of bias.

Fig. 2

RCT, randomized controlled trial.