| Date | Event | Description |
|---|---|---|
| 3 January 2012 | New search has been performed | The search retrieved 113 records from the Cochrane Central Register of Clinical Trials (Clinical Trials) and 15 records from MEDLINE (OVID). None of these matched the inclusion criteria of the review. |
| 3 January 2012 | New citation required but conclusions have not changed | The methods section has been updated. |
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