| Date | Event | Description |
|---|---|---|
| 2 July 2014 | New citation required but conclusions have not changed | Conclusions not changed |
| 20 January 2014 | New search has been performed | Two top up searches were performed for this update: one in February 2013 and one in January 2014. One new study was included from the search in 2013 ( Sano 2011, 406 participants). There were no studies for inclusion from the 2014 search |
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