Funding for this research was provided by:
Department of Health, UK (015/0306)
Received: 23 October 2018
Accepted: 6 March 2019
First Online: 1 April 2019
Ethics approval and consent to participate
: The study was reviewed and approved by the National Research Ethics Service Committee London, Brent (13/LO/0077), UK. All participants gave written informed consent to be part of the study.
: Not applicable.
: HRS reports funding from the Department of Health during the course of the study. JS, JM and MF report funding from the Department of Health and the National Institute for Health Research Clinical Research Network, UK, during the conduct of the study. GF reports personal fees from AbbVie, Gilead and Merck during the conduct of the study. The other authors declare that they have no competing interests.
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