1. Centre for Evidence-Based Health Care, Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa
2. Social Research Methodology Group, Centre for Sociological Research, Faculty of Social Sciences, Katholieke Universiteit Leuven, Belgium
3. Division for Research and Methodology, Psychological Society of South Africa, South Africa
4. Amsterdam University College, Amsterdam, The Netherlands
5. Institute for Social and Health Sciences, University of South Africa, South Africa
6. Violence, Injury and Peace Research Unit, South African Medical Research Council – University of South Africa, South Africa