1. School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada;
2. School of Public Health, University of the Witwatersrand, Johannesburg, South Africa;
3. Gender and Health Research Unit, South Africa Medical Research Council;
4. Project Empower, Durban, South Africa;
5. Centre for Rural Health, School of Nursing and Public Health, University of Kwazulu-Natal, Durban, South Africa