Funding for this research was provided by:
Medical Research Council (MC_UU_12023/24)
Received: 4 July 2017
Accepted: 9 January 2018
First Online: 7 February 2018
Ethics approval and consent to participate
: Not applicable
: All authors read and approved the final manuscript.
: CV, WC, BC, AS, KS and MG declare that they have no competing interests. However, BH receives payment as a consultant in PPI from a number of organisations, including the MRCCTU at UCL. None of the other organisations that have paid her have funded any aspect of the production of this manuscript. RS receives regular honoraria as a patient advocate or representative from the NCRI, the NIHR and the MRCCTU, and less regularly from others. He also receives fees as a trainer from HRA (and occasionally others), and as a journal editor from BioMed Central.
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