BJOG: An International Journal of Obstetrics & GynaecologyVolume 113, Issue 4 p. i-i STATEMENT OF DISPUTED AUTHORSHIP First published: 05 May 2006 https://doi.org/10.1111/j.1471-0528.2006.01134.xCitations: 2 COPE, Committee on Publication Ethics. BMA House, Tavistock Square, London WC1H 9JR United Kingdom. http://www.publicationethics.org.uk/about Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat No abstract is available for this article.Citing Literature Volume113, Issue4April 2006Pages i-i RelatedInformation