1 KEMRI - Wellcome Trust Research Programme, Nairobi, Kenya. TTuti@kemri-wellcome.org.
2 KEMRI - Wellcome Trust Research Programme, Nairobi, Kenya.
3 Centre for Health Informatics, Division of Informatics, Imaging & Data Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
4 NIHR Greater Manchester Primary Care Patient Safety Translational Research Centre, Manchester, UK.
5 Nuffield Department of Medicine, Oxford University, Oxford, UK.