1 Kenya Medical Research Institute Wellcome Trust Research Programme, Nairobi 00100, Kenya; Health Systems Collaborative, Nuffield Department of Medicine, University of Oxford, Oxford, UK. Electronic address: [email protected].
2 Kenya Medical Research Institute Wellcome Trust Research Programme, Nairobi 00100, Kenya; Department of Paediatrics and Child Health, University of Nairobi, Nairobi, Kenya.
3 Kenya Medical Research Institute Wellcome Trust Research Programme, Nairobi 00100, Kenya.
4 Intensive Care Unit, Royal Melbourne Children's Hospital, Melbourne, Australia; Department of Paediatrics, University of Melbourne, Australia; School of Medicine and Health Sciences, University of Papua New Guinea, Port Moresby, Papua New Guinea.