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Acknowledgements
The editors are grateful to:
JAMA for making a toll free link to the pdf of this article available (email to Iain Chalmers from Annette Flanagin, 29 August 2014).
The editors are grateful to:
JAMA for making a toll free link to the pdf of this article available (email to Iain Chalmers from Annette Flanagin, 29 August 2014).