Footnotes

• Twitter @paragbawaskar

• Contributors DN and ASC were involved in the conceptualisation, supervision, revision and editing of the manuscript. PHB was involved in writing the original draft, investigation and data maintenance.

• 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 and public involvement Patients and/or the public were not involved in the design, conduct, reporting or dissemination plans of this research.

• Patient consent for publication Not required.

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