1. Division of Radiodiagnosis, Department of Medical Imaging and Clinical Oncology Stellenbosch University and Tygerberg Hospital Tygerberg South Africa
2. Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences Stellenbosch University and Tygerberg Hospital Cape Town South Africa
3. Division of Cardiothoracic Surgery, Department of Surgical Sciences Stellenbosch University and Tygerberg Hospital Tygerberg South Africa