Date	Event	Description
26 June 2020	New search has been performed	We updated the search for eligible studies in August 2019. We identified no new randomised controlled trials for inclusion; and one new trial for exclusion.
26 June 2020	New citation required but conclusions have not changed	A supplementary search was carried out in August 2019. No new included studies were identified (one new excluded study was found).The main conclusions of the original review remained unchanged.