| Date | Event | Description |
|---|---|---|
| 1 October 2019 | New search has been performed | New search run. Three new studies included. Six new studies were excluded and 11 new ongoing studies were identified. |
| 1 October 2019 | New citation required but conclusions have not changed | New search run. Three new studies included. Six new studies were excluded and 11 new ongoing studies were identified. Review text updated in keeping with current Cochrane standards including addition of 'Summary of findings' tables. No change to conclusions. |
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