Funding for this research was provided by:
South Western Ambulance Service NHS Foundation Trust (N/A)
Received: 7 April 2020
Accepted: 24 September 2020
First Online: 6 October 2020
Ethics approval and consent to participate
: Ethical review and approval were received from the NHS Health Research Authority West Midlands – South Birmingham Research Ethics Committee (19/WM/0100, date 23/04/2019). All study participants provided written informed consent for the purposes of this project.
: All participants received verbal and written explanation of the purpose of the study and consented to their anonymised data being published.
: All authors declare no competing interests.