Footnotes

• Contributors The entire manuscript is fully and equally coauthored.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Patient consent for publication Not required.

• Provenance and peer review Not commissioned; externally peer reviewed.

• Data availability statement Data sharing not applicable as no datasets generated and/or analysed for this study.