Funding for this research was provided by:
Medical Research Council (G1002011)
Article History
Received: 9 June 2021
Accepted: 25 October 2021
First Online: 8 November 2021
Declarations
:
: The authors have no competing or potential conflicts of interest.
: Ethical approval for the study was granted by the National Research Ethics Committee London—Brent (reference: 12/LO/0119) and the University of Reading Research Ethics Committee.
: Written consent was provided from parents. Young people aged 13–15 years provided written assent and those aged 16–18 years provided written consent.
: Consent for publication was provided from parents and young people.