1. Department of Sociology and Centre for Longitudinal and Life Course Studies, University of Antwerp, Antwerp, Belgium; Centre for Health Systems Research and Development, University of the Free State, Bloemfontein, South Africa
2. Department of Sociology and Centre for Longitudinal and Life Course Studies, University of Antwerp, Antwerp, Belgium
3. Centre for Health Systems Research and Development, University of the Free State, Bloemfontein, South Africa