Reason for withdrawal from publication
This review has been withdrawn from publication because it is out of date and does not meet the current methodological standards of The Cochrane Collaboration.
The editorial group responsible for this previously published document have withdrawn it from publication.
What's new
| Date | Event | Description |
|---|---|---|
| 8 October 2013 | Amended | This review has been withdrawn from publication because it is out of date and does not meet the current methodological standards of The Cochrane Collaboration. |
History
Protocol first published: Issue 1, 2001 Review first published: Issue 1, 2003
| Date | Event | Description |
|---|---|---|
| 16 September 2008 | Amended | Converted to new review format. |
Withdrawn from publication for reasons stated in the review