| Date | Event | Description |
|---|---|---|
| 30 July 2017 | Amended | Incorporated feedback from Editorial Assistant |
| 13 July 2017 | Amended | Incorporated feedback from Contact Editor |
| 3 April 2017 | Feedback has been incorporated | Incorporated feedback and comments from Reviewers |
| 24 March 2017 | Feedback has been incorporated | I ncorporated feedback and com ments incorporated from Reviewers |
| 3 January 2017 | Feedback has been incorporated | Included full‐text article (Yang et al) in place of the previously included Abstract only |
| 2 November 2016 | Feedback has been incorporated | Incorporated feedback from Section Editor |
| 24 June 2016 | New search has been performed | Implemented Review protocol and systematic review/Undertook meta ‐analysis /Prepared corresponding manuscript |
| 13 November 2012 | Amended | Updated the protocol published in 2007 |
| 13 August 2012 | New citation required and minor changes | Updated original protocol from 2007 with up‐to‐date references; updated protocol evaluated by the CCCG Editorial Board |
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