The editorial group responsible for this previously published document have withdrawn it from publication.
Reason for withdrawal
This review is out of date, and the original authors are no longer available to update it. To view the published versions of this article, please click the 'Other versions' tab.
Last assessed as up-to-date: 12 June 2001.
Protocol first published: Issue 4, 2001
Review first published: Issue 4, 2002
Sources of support
- Cochrane Cancer Network, UK.
- Macmillan Cancer Relief, UK.