1 Centre for Values, Ethics and the Law in Medicine, Woolcock Institute of Medical Research, University of Sydney, Sydney, Australia paul.mason@sydney.edu.au.
2 Dept of Anthropology, Macquarie University, Sydney, Australia.
3 Division of Public Health Medicine, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa.
4 Philips Africa Innovation Hub, Nairobi, Kenya.
5 Division of Medical Microbiology, Dept of Pathology, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa.