| Date | Event | Description |
|---|---|---|
| 20 August 2020 | New citation required and conclusions have changed | Issue 8 2020: The update of this review has led to changes in the conclusions. |
| 20 August 2020 | New search has been performed | Issue 8 2020: Updated searches completed in February 2020 yielded six studies for inclusion. The previous published version of this review had no included studies (Skelton 2013). |
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