Received: 9 November 2020
Accepted: 2 March 2021
First Online: 16 March 2021
: This study had full ethical approval by the West of Scotland Research Ethics Committee (REC reference: 20/WS/0097). As this was a registry study the need for written informed consent by the participants was deemed not to be necessary. However all NHS patients who declared their wish to ‘opt out’ were not included.
: As this was a registry study, consent for publication was not required.
: The authors have no competing or conflict of interest to declare.