1. Division of Urology, Department of Surgery, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
2. Division of Urology, Department of Surgery, University of Cape Town, Cape Town, 7925, South Africa
3. Division of Urology, Department of Surgery, Faculty of Medicine and Health Sciences, Frere Hospital and Water Sisulu University, East London, 5200, South Africa
4. Austin Health and Peter MacCallum Centre, University of Melbourne. Melbourne, Australia