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Lookup NU author(s): Jason PowellORCiD, James O'HaraORCiD, Sean Carrie, Emerita Professor Janet WilsonORCiD
This is the final published version of an article that has been published in its final definitive form by BMJ Group , 2017.
For re-use rights please refer to the publisher's terms and conditions.
Author(s): Powell J, O'Hara J, Carrie S, Wilson JA
Publication type: Article
Publication status: Published
Journal: BMJ
Year: 2017
Volume: 357
Print publication date: 13/04/2017
Online publication date: 13/04/2017
Acceptance date: 10/03/2017
Date deposited: 13/04/2017
ISSN (print): 1756-1833
ISSN (electronic): 2044-6055
Publisher: BMJ Group
URL: https://doi.org/10.1136/bmj.j1450
DOI: 10.1136/bmj.j1450
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