Date	Event	Description
7 May 2015	New citation required and conclusions have changed	7 new trials compared immediate insertion versus early or standard insertion; 8 earlier trials compared immediate insertion of different devices or insertion techniques
1 April 2015	New search has been performed	Search updated
26 February 2015	Amended	Moved 1 trial from Ongoing studies to Studies awaiting classification
28 January 2015	Amended	Updated terminology in Types of interventions to define 'early' and 'standard' insertion
12 January 2015	Amended	Updated wording of Objectives and Types of outcome measures to better reflect focus of this new version
4 August 2014	New search has been performed	7 new Included studies and 4 Ongoing studies