| Date | Event | Description |
|---|---|---|
| 14 May 2013 | New search has been performed | Three new trials have been added (Lumi 2009; Park 2007; Pinedo 2012). Risk of bias was re‐assessed on all the included trials in accordance with the current methodology. |
| 14 May 2013 | New citation required but conclusions have not changed | Added three new trials Lumi 2009; Park 2007; Pinedo 2012. Risk of bias was re‐assessed on all the included trials in accordance with the current methodology. |
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