Date | Event | Description |
---|---|---|
1 May 2009 | New citation required and major changes | This protocol has been substantially updated since first publication in 2001 and has been co‐registered within the Campbell Collaboration. |
9 September 2008 | Amended | Hannah Jones added to authorline |
9 September 2008 | Amended | Converted to new review format. |
4 July 2007 | Amended | Camilla Thorgaard added to authorline; Sima Pindoria and Carol Joughin removed |
20 April 2005 | New citation required and conclusions have changed | Substantive amendment |