Footnotes

• Contributors PO: complete contributions to the conception and design of the work, and the acquisition, analysis and interpretation of data. Drafting the work and revising it critically for important intellectual content. Final approval of the version published. Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

• Disclaimer The opinions expressed in this commissioned editorial are solely responsibility of the author and do not necessarily reflect the views of the Pan American Health Organization.

• Competing interests None declared.

• Provenance and peer review Commissioned; internally peer reviewed.