Footnotes

• Contributors AMS conceptualised and designed the study and data collection instruments, collected data, drafted the initial manuscript, and reviewed and revised the manuscript. MO’R designed the data collection instrument, collected data and reviewed the manuscript. OF conceptualised and designed the study and data collection instruments, and critically reviewed and revised the 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.

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

• Patient consent for publication Not required.