1. Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences Stellenbosch University and Tygerberg Hospital Cape Town South Africa
2. Division of Anatomical Pathology, Department of Pathology, Faculty of Medicine and Health Sciences Stellenbosch University and Tygerberg Hospital Cape Town South Africa
3. National Health Laboratory Service, Tygerberg Cape Town South Africa
4. Division of Medical Virology, Faculty of Medicine and Health Science Stellenbosch University and Tygerberg Hospital Cape Town South Africa
5. Division of Forensic Medicine, Department of Pathology, Faculty of Medicine and Health Sciences Stellenbosch University and Tygerberg Hospital Cape Town South Africa
6. Department of Pediatric Radiology The Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
7. Department of Radiology, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA