| Date | Event | Description |
|---|---|---|
| 27 April 2016 | Feedback has been incorporated | A Feedback comment and response from the review authors have been added to the Feedback section of this review. Edits have been made in response to the comments on the review including minor edits to the abstract and Plain Language Summary, 'Dealing with missing data', Results section, Discussion section, Conclusions, Characteristics of included studies and Data and analyses sections. None of these changes affects the original conclusions of the review. |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.