| Date | Event | Description |
|---|---|---|
| 8 March 2017 | New citation required but conclusions have not changed | Results from update search incorporated into review. Additional data does not change overall conclusions. |
| 30 January 2016 | New search has been performed | Search update, inclusion of two further studies and additional long‐term data from one study, additional data extraction from previous studies, analyses and text update. |
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