1 | University of Pretoria, South Africa |
2 | Tilburg University, The Netherlands and University of Johannesburg, South Africa |
3 | Tilburg University, The Netherlands and North-West University, South Africa and University of Queensland, Australia |
4 | University of Witswatersrand, South Africa |
5 | University of Cape Town, South Africa |
6 | University of Western Cape, South Africa |
7 | University of the Free State, South Africa |