Date | Event | Description |
---|---|---|
22 June 2008 | Amended | Converted to new review format. |
12 November 2007 | New search has been performed | In the 2007 update, one new study was included and six new studies were excluded. After integrating the data from the new included study, no significant changes were noted in all comparisons evaluated. Our conclusions and recommendations for further research remain unchanged. |
20 January 2005 | New search has been performed | Searches conducted. |