Footnotes

• Contributors JS wrote initial draft of article. KK edited article extensively. UV edited article and wrote concluding paragraph, UV also provided support in putting together references in RAPM format.

• 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.