| Date | Event | Description |
|---|---|---|
| 25 June 2020 | New citation required but conclusions have not changed | The addition of four new studies and exclusion of one study did not lead to a change in the conclusions of this review. |
| 25 June 2020 | New search has been performed | The review has been updated; four new studies have been incorporated (Cheong 2017; Liu 2015; Tchartchian 2014; Trew 2017). One study which was previously included (DiZerega 2007) has been excluded. |
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