| Date | Event | Description |
|---|---|---|
| 29 April 2019 | New citation required and conclusions have changed | Review updated with 11 new studies. The background was redrafted and updated. 'Risk of bias 2' assessment of the primary outcome for all studies. Outcomes and subgroup analyses updated. |
| 29 April 2019 | New search has been performed | New literature search run |
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