1. University of Oxford, Oxford, United KingdomKenya Medical Research Institute/Wellcome Trust Collaborative Programme, Nairobi, Kenya
2. Kenya Medical Research Institute/Wellcome Trust Collaborative Programme, Nairobi, Kenya
3. Ministry of Health, Nairobi, Kenya
4. University of Oxford, Oxford, United KingdomKenya Medical Research Institute/Wellcome Trust Collaborative Programme, Nairobi, KenyaMinistry of Health, Nairobi, Kenya