Funding for this research was provided by:
Cancer Research UK (NA)
RM PARTNERS (NA)
CLIC Sargent (NA)
Received: 3 September 2018
Accepted: 5 February 2019
First Online: 15 February 2019
Ethics approval and consent to participate
: Ethics approval and consent to participate was obtained for all studies. Ethical approval was provided by both University College London Research Ethics Committee reference 6206/001 and London Hampstead NHS Research Ethics Committee reference 15/LO/0764.
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: The authors declare that they have no competing interests.
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