Funding for this research was provided by:
Health Services Research Programme (15/136/45)
Received: 21 April 2020
Accepted: 5 June 2020
First Online: 19 June 2020
Ethics approval and consent to participate
: DEPICT has ethical approval from the Health Research Authority, the National Research Ethics Service (London Riverside, reference: 17/LO/1267) and the Confidentiality Advisory Group (reference: 17CAG0129).
: Not applicable.
: The authors have no conflicts of interest to declare.