Date	Event	Description
24 July 2012	Feedback has been incorporated	Comments from Kellie Murphy added ‐ see Feedback 1.
18 July 2011	Amended	Corrected reference error ‐ Ashworth 2006 amended to read Ashwood 2006.
18 April 2011	New citation required and conclusions have changed	Conclusions are now stronger; early benefit now without evidence of longer term harm. Two additional authors joined the review team (C McKinlay and P Middleton).
31 March 2011	New search has been performed	Search updated in March 2011 and data from five new trials added (Garite 2009; Mazumder 2008; McEvoy 2010; Murphy 2008; Peltoniemi 2007). Published longer term follow‐up in early childhood now included for four trials (Crowther 2006; Murphy 2008; Peltoniemi 2007; Wapner 2006) and information on follow up for one further trial added (Mazumder 2008). Acknowledgement of unpublished information provided on caesarean section by Emeritus Professor Thomas Garite for the Garite 2009 trial.
20 September 2008	Amended	Converted to new review format.
11 May 2007	New search has been performed	Search updated in November 2006 and data from two trials now published added (Crowther 2006; Wapner 2006). We updated the search just before submission for publication and identified the published report for the previously listed Peltoniemi ongoing study. We have added it to the ' Studies awaiting assessment' section and will consider it for inclusion in the next update (Peltoniemi 2007).