Funding for this research was provided by:
Engineering and Physical Sciences Research Council (EP/G059063/1, EP/G059063/1, Doctoral Training Grant)
Article History
Received: 4 June 2019
Accepted: 5 March 2020
First Online: 30 March 2020
Ethics approval and consent to participate
: The study was approved by the University College London Ethics Committee, Project ID: 7459/001. Written informed consent was obtained from all participants.
: Participants provided informed consent to have their anonymised information published.
: The authors declare that they have no competing interests.