| Date | Event | Description |
|---|---|---|
| 28 April 2009 | New search has been performed | LIMB trial added to excluded studies. Copy edits made to the text. |
| 9 May 2008 | Amended | Converted to new review format. |
| 11 November 2007 | New citation required and conclusions have changed | Substantive amendment. Additional safety and efficacy data added in the light of withdrawal of 300 mg tablets in France. Safety considerations expanded. |
| 20 August 2007 | New citation required but conclusions have not changed | Citation order changed. |
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