[1
] Department of Research, Joint Clinical Research Centre, P.O. Box 10005, Kampala,
Uganda
[2
] Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Wilrijk, Antwerp,
Belgium
[3
] Department of Statistics, Medical Research Council/Uganda Virus Research Institute,
P.O. Box 49, Entebbe, Uganda
[4
] Centre for Health Economics, University of York, York, YO10 5DD, UK
[5
] Department of Research, Dignitas International, P.O. Box 1071, Zomba, Malawi
[6
] Clinical Research Centre, University of Zimbabwe, P.O. Box MP 167 Harare, Zimbabwe
[7
] Department of Infection & Population Health, University College London, London, WC1E
6JB, UK
[8
] Department of Research, Infectious Diseases Institute, Makerere University, P.O.
Box 22418, Kampala, Uganda
[9
] Department of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
[10
] Faculty of Medicine, Imperial College London, London, SW7 2AZ, UK
[11
] School of Population Health, University of Queensland, Brisbane, QLD 4072, Australia
[12
] Faculty of Paediatrics, Makerere University College of Health Sciences, P.O. Box
7072, Kampala, Uganda
[13
] Medical Research Council, Clinical Trials Unit at University College London, London,
WC2B 6NH, UK
[14
] Department of Global Health and Development, London School of Hygiene & Tropical
Medicine, London, WC1E 7HT, UK.