Date	Event	Description
19 February 2019	New search has been performed	We have revised the whole review so that it reflects current Cochrane methodology. We have excluded evaluation of imprecision with Trial Sequential Analysis from the GRADE assessment. In the previously published review, assessment of imprecision with Trial Sequential Analysis was presented in the 'Summary of findings' table.
28 January 2019	New citation required but conclusions have not changed	No new randomised clinical trials identified for the review update. Discrepancies occurred in GRADE assessment and in conclusions in certainty of evidence for the outcomes: serious adverse events (from low to very low); liver‐related mortality up to three months following randomisation (from low to very low); and any complication, up to three months following randomisation (from low to very low).
28 January 2019	New search has been performed	Search for new trials performed 18 January 2019