1. Gender and Health Research Unit, South African Medical Research Council, Pretoria, South Africa
2. Centre for Rural Health, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa
3. Johns Hopkins School of Public Health, Johns Hopkins University, Baltimore, MD, USA
4. Health Systems and Population Studies Division, Icddr,b, Dhaka, Bangladesh
5. Office of the Executive Scientist, South African Medical Research Council, Cape Town, South Africa