1. Health Economics Research UnitKEMRI‐Wellcome Trust Research Programme Nairobi Kenya
2. Department of Clinical SciencesLiverpool School of Tropical Medicine Liverpool UK
3. Centre for Geographic Medicine ResearchKenya Medical Research Institute KiIifi Kenya
4. Centre for Clinical ResearchKenya Medical Research Institute Nairobi Kenya
5. Centre for Public Health ResearchKenya Medical Research Institute Nairobi Kenya
6. Medical MicrobiologyMoi University Eldoret Kenya
7. Nuffield Department of MedicineUniversity of Oxford Oxford UK