1. Unit of Undergraduate Medical Education, University of the Witwatersrand, Faculty of Health Sciences, Johannesburg, Gauteng, South Africa
2. Centre for Health Professions Education, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
3. Department of Medicine and The Wilson Centre, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
4. Faculty of Health Sciences, University of Cape Town, Observatory, Western Cape, South Africa
5. Centre for Health Science Education, University of the Witwatersrand, Faculty of Health Sciences, Johannesburg, Gauteng, South Africa