Received: 21 August 2021
Accepted: 13 April 2022
First Online: 28 April 2022
: Ethical approval was not required for this study as per the King's College London (KCL) Research Ethics Committee. All methods were performed in accordance with the relevant guidelines and regulations. The methods in this study were performed following the STROBE guidelines for reporting observational studies, which include a checklist for cross-sectional studies. All participants gave their informed consent for their feedback to be involved in this study.
: Not applicable.
: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript.