Received: 6 July 2020
Accepted: 8 September 2020
First Online: 15 September 2020
Ethics approval and consent to participate
: This study was approved by the NHS Greater Glasgow and Clyde Caldicott guardian. The study protocol (GN20AE307) was approved by the North West England – Preston research ethics committee (20/NW/0336) and registered with clinicaltrials.gov (NCT04484545). Patient consent to participate was waived.
: All authors have consented to publication and are guarantors of the manuscript and data presented.
: None of the authors have any conflict of interest to declare.