About the Authors

Zoë Matthews

Affiliation Division of Social Statistics and Centre for Global Health, Population, Poverty, and Policy, University of Southampton, Southampton, United Kingdom

Amos Channon

arc102@soton.ac.uk

Affiliation Division of Social Statistics and Centre for Global Health, Population, Poverty, and Policy, University of Southampton, Southampton, United Kingdom

Sarah Neal

Affiliation Division of Social Statistics and Centre for Global Health, Population, Poverty, and Policy, University of Southampton, Southampton, United Kingdom

David Osrin

Affiliation UCL Centre for International Health and Development, Institute of Child Health, London, United Kingdom

Nyovani Madise

Affiliation Division of Social Statistics and Centre for Global Health, Population, Poverty, and Policy, University of Southampton, Southampton, United Kingdom

William Stones

Affiliation Aga Khan University, Nairobi, Kenya

Competing Interests

David Osrin is on the Editorial Board of PLoS Medicine.

Author Contributions

ICMJE criteria for authorship read and met: ZM AAC SN DO NM WS. Agree with the manuscript's results and conclusions: ZM AAC SN DO NM WS. Designed the experiments/the study: ZM. Analyzed the data: AAC. Wrote the first draft of the paper: ZM AAC. Contributed to the writing of the paper: AAC SN DO NM WS. Organised the paper, co-ordinated contributions and finalised last draft: ZM. Review and analysis of existing literature: SN. Critically revised the manuscript for content: WS.