About the Authors

Caroline Lynch, Cally Roper
London School of Hygiene and Tropical Medicine, London, United Kingdom

Corresponding Author


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.