Reason for withdrawal from publication
The research question and the protocol are now methodologically out of date.
withdrawn
The editorial group responsible for this previously published document have withdrawn it from publication.
What's new
| Date | Event | Description |
|---|---|---|
| 20 May 2021 | Amended | See published notes. |
History
Protocol first published: Issue 2, 2013
| Date | Event | Description |
|---|---|---|
| 27 March 2014 | Amended | Contact details updated. |
Sources of support
Internal sources
None declared, Other
External sources
None declared, Other
Withdrawn from publication for reasons stated in the review