Funding for this research was provided by:
Medical Research Council (MR/M022552/1)
Received: 5 April 2023
Accepted: 11 July 2023
First Online: 20 July 2023
: Ethical approval was obtained from the South-West Bristol Research Ethics Committee (15/SW/0289). Parents gave informed written consent and children provided assent.
: Not applicable.
: SK reports grants from Medical Research Council and from GSK for conduct of the current study; and grants from NIHR/HTA, Aspire Pharma and Moulton Foundation outside the submitted work. SJK and WJW report grants from Moulton Foundation outside of this work.