| Date | Event | Description |
|---|---|---|
| 25 March 2015 | New citation required but conclusions have not changed | The conclusions have not changed. Recommendations for further studies are appropriate. |
| 25 March 2015 | New search has been performed | We re‐wrote the meta‐analysis. We updated the searches in March 2015 and included two new studies (Chowdhury 2013; Kim 2011) and excluded three new studies (Colnaghi 2012; Mayordomo‐Colunga 2010; Montaguti 2011). |
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