1. Centre for International Health and Human Rights Studies, Toronto, Canada
2. Centre for International Health and Human Rights Studies, Toronto, Canada; Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
3. Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
4. Centre for International Health and Human Rights Studies, Toronto, Canada; Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; School of Medicine, University of Cape Town, Cape Town, South Africa