About the Authors

Rachel Peletz

Rachel.Peletz@lshtm.ac.uk

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

Martin Simunyama

Affiliation Tropical Gastroenterology and Nutrition Group, University Teaching Hospital, Lusaka, Zambia

Kelvin Sarenje

Affiliation Tropical Gastroenterology and Nutrition Group, University Teaching Hospital, Lusaka, Zambia

Kathy Baisley

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

Suzanne Filteau

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

Paul Kelly

Affiliations Tropical Gastroenterology and Nutrition Group, University Teaching Hospital, Lusaka, Zambia, Barts and The London School of Medicine, Queen Mary, University of London, London, United Kingdom

Thomas Clasen

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

Competing Interests

RP and TC receive funding from Vestergaard-Frandsen for research and consulting. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: RP SF PK TC. Performed the experiments: RP MS KS. Analyzed the data: RP KB. Wrote the paper: RP KB SF PK TC.