| Date | Event | Description |
|---|---|---|
| 8 July 2015 | New search has been performed | Searches updated |
| 5 May 2015 | New citation required but conclusions have not changed | 3 new trials did not change conclusions |
| 28 January 2015 | New search has been performed | Included 3 new trials included (Simmons 2013; Tang 2014; Torres 2014); excluded 1 trial that was previously included but did not have data on our primary outcomes (Proctor 2006) |
| 7 January 2015 | Amended | Edited wording of Objectives and Types of outcome measures to reflect focus of current review |
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