Footnotes

• Twitter @Arin Mukherjee

• Contributors The project was conceived by AM. AG and AM prepared the questionnaire. Data were collected by VJ and coordinated by AM. Data were analysed by AM, AG and VJ. Write-up and critical analysis were done by AM and AG. All authors read and approved the final manuscript.

• 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; internally peer reviewed.