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Open Peer Review Reports for: Temporal trends in the frequency of twins and higher-order multiple births in Canada and the United States

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Pre-publication versions of this article are available by contacting

Original Submission
2 Mar 2012 Submitted Original manuscript
18 Mar 2012 Reviewed Reviewer Report - Leanne Bricker
9 Jul 2012 Reviewed Reviewer Report - Steve Cole
31 Aug 2012 Author responded Author comments - DESHAYNE FELL
Resubmission - Version 2
31 Aug 2012 Submitted Manuscript version 2
11 Sep 2012 Editorially accepted
27 Sep 2012 Article published 10.1186/1471-2393-12-103

How does Open Peer Review work?

Open peer review is a system where authors know who the reviewers are, and the reviewers know who the authors are. If the manuscript is accepted, the named reviewer reports are published alongside the article. Pre-publication versions of the article are available by contacting

You can find further information about the peer review system here.