Date	Event	Description
2 August 2018	Amended	Correction of a typo in Characteristics of studies
23 January 2018	New citation required but conclusions have not changed	The addition of five new studies has not changed our conclusions. The comparisons have been restructured.
23 January 2018	New search has been performed	We added five new studies for this update (Goodman 2016; Kaser 2017; Park 2015; Wu 2016; Yang 2018). Kovacs 2019 had new data published in 2017.
5 October 2015	Feedback has been incorporated	Feedback on the review was received in April 2015. Feedback and the review authors' response to the feedback have been summarised in the 'Feedback' section. Footnotes were added to 'Summary of findings' tables 1 and 3 and to the 'Characteristics of included studies' table for Rubio 2014.
5 March 2015	Feedback has been incorporated	Feedback applicable to the review protocol was received in February 2015. Feedback and the review authors' response to the feedback have been summarised in the 'Feedback' section. No changes were made to the review.