Funding for this research was provided by:
Economic and Social Research Council (ES/K00087X/1)
Text and Data Mining valid from 2018-07-31
Received: 17 January 2018
Accepted: 8 June 2018
First Online: 31 July 2018
Ethics approval and consent to participate
: Ethics approval was obtained from the Department Research Ethics Committee for the Department of Social and Intervention, University of Oxford (reference 2011-12_83).
: Not applicable.
: SG’s spouse is a salaried-employee of Eli Lilly and Company, and owns stock. SG has accompanied his spouse on company-sponsored travel. SH and DM are members of the CONSORT Group. All other authors declare no competing interest.
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