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. 2022 May;14(5):1620–1637. doi: 10.21037/jtd-22-550

Figure 1.

Figure 1

Literature screening process and inclusion results. *, consider, if feasible to do so, reporting the number of records identified from each database or register searched (rather than the total number across all databases/registers); **, if automation tools were used, indicate how many records were excluded by a human and how many were excluded by automation tools. NCT, national clinical trial; AF/AFL, atrial fibrillation/atrial flutter.