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Open Peer Review Reports for: The sydney playground project: popping the bubblewrap - unleashing the power of play: a cluster randomized controlled trial of a primary school playground-based intervention aiming to increase children's physical activity and social skills

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Pre-publication versions of this article are available by contacting

Original Submission
15 Aug 2011 Submitted Original manuscript
18 Aug 2011 Author responded Author comments - Lina Engelen
Resubmission - Version 2
18 Aug 2011 Submitted Manuscript version 2
1 Sep 2011 Editorially accepted
1 Sep 2011 Article published 10.1186/1471-2458-11-680

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.