Received: 22 April 2021
Accepted: 21 June 2021
First Online: 2 July 2021
: The study conformed to the ethical principles for medical research involving human participants, as outlined by the world medical association declaration of Helsinki, and received ethical approval by the Queen Margaret University and West of Scotland NHS Research Ethics Committees (NHS REC reference number: 15/WS/0079). All patients who agreed to take part in the study provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.