Reason for withdrawal from publication
The protocol is out of date and does not meet the current methodological standards of Cochrane. Withdrawn by Cochrane Colorectal group, currently no plans to revise/republish.
withdrawn
The editorial group responsible for this previously published document have withdrawn it from publication.
What's new
| Date | Event | Description |
|---|---|---|
| 11 February 2021 | Amended | withdrawn |
History
Protocol first published: Issue 9, 2011
Withdrawn from publication for reasons stated in the review