About the Authors

Caroline Lynch

Affiliation London School of Hygiene and Tropical Medicine, London, United Kingdom

Cally Roper

Cally.Roper@lshtm.ac.uk

Affiliation London School of Hygiene and Tropical Medicine, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Wrote the first draft: CR CL. Wrote the paper: CR and CL contributed equally. ICMJE criteria for authorship read and met: CR CL. Agree with the manuscript's results and conclusions: CR CL.