1. a Faculty of Social Work , University of Calgary , Calgary , Canada
2. b Department of Physical Therapy , University of Toronto , Toronto , ON , Canada
3. c HIV Social, Behavioural and Epidemiological Studies Unit and Public Health Sciences , University of Toronto , Toronto , ON , Canada
4. d Health Economics and HIV/AIDS Research Division (HEARD) , South Africa
5. e Department of Health Policy, Management and Evaluation , University of Toronto , Toronto , ON , Canada