Date	Event	Description
12 June 2012	New citation required but conclusions have not changed	Due to the retraction of four studies (Boldt 2006; Haisch 2001a; Haisch 2001b; Huttner 2000), the review has been amended. The retracted studies, and their associated data, are now excluded from the review. The conclusions of the review have not changed.
1 May 2012	New citation required but conclusions have not changed	The review has been updated to December 2011. Twenty additional studies have been included (Akech 2006;Dolecek 2009; Friedman 2008; Godet 2008; Gombocz 2007; Gondos 2010; Haas 2007; Hecht‐Dolnik 2009; Inal 2010; Jin 2010; Mahmood 2007; Mittermayr 2007; Mukhtar 2009; Ooi 2009; Reine 2008; Schramko 2009; Schramko 2010; Standl 2008; Volta 2007; Yang 2011). The conclusions of the review have not changed.
30 April 2012	New search has been performed	The review has been updated to December 2011.
10 February 2011	New citation required but conclusions have not changed	The editorial group is aware that a clinical trial by Prof. Joachim Boldt has been found to have been fabricated (Boldt 2009). As the editors who revealed this fabrication point out (Reinhart 2011; Shafer 2011), this casts some doubt on the veracity of other studies by the same author. All Cochrane Injuries Group reviews which include studies by this author have therefore been edited to show the results with this author's trials included and excluded. Readers can now judge the potential impact of trials by this author (Boldt 1986, Boldt 1993a, Boldt 1995, Boldt 1996a, Boldt 1996b, Boldt 1996c, Boldt 1998, Boldt 2000, Boldt 2001, Boldt 2006a, Haisch 2001c, Haisch 2001c, Huttner 2000a) on the conclusions of the review.
11 July 2008	Amended	Converted to new review format.
2 October 2007	New search has been performed	The search for the review was updated in March 2007 and thirteen new studies were added to the review.