Footnotes

• Contributors RW contributed to the study’s conceptualisation, survey instruments development, data analysis and manuscript writing. DS and TV contributed to the survey instruments development and manuscript writing. EA-R and XZ contributed to the study’s conceptualisation, instruments development and manuscript writing.

• 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.

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