1. Department of Paediatric Haematology and Oncology Faculty of Medicine and Health Sciences Stellenbosch University Tygerberg Hospital Cape Town South Africa
2. Paediatric Haematology and Oncology Department of Paediatrics, Antwerp University Hospital Edegem Belgium
3. Division of Epidemiology and Biostatistics Faculty of Medicine and Health Sciences Stellenbosch University Stellenbosch South Africa
4. Department of Paediatrics and Child Health Faculty of Health Sciences Paediatric Haematology and Oncology Service Red Cross War Memorial Children's Hospital University of Cape Town Cape Town South Africa
5. Faculty of Health Sciences Division of Paediatric Haematology and Oncology Department of Paediatrics and Child Health University of the Witwatersrand Charlotte Maxeke Johannesburg Academic Hospital Cape Town South Africa
6. Paediatric Haematology and Oncology Department of Paediatrics, University of Pretoria Steve Biko Academic Hospital Pretoria South Africa
7. Faculty of Health Sciences Division of Paediatric Haematology and Oncology Department of Paediatrics and Child Health University of the Witwatersrand Chris Hani Baragwanath Academic Hospital Johannesburg South Africa
8. Department of Paediatrics, Faculty of Health Sciences University of the Free State Division of Paediatric Haematology and Oncology Universitas Hospital Bloemfontein South Africa
9. Division of Paediatric Haematology and Oncology Hospital Department of Paediatrics Frere Hospital East London Eastern Cape South Africa
10. Department of Paediatric Surgery Faculty of Health Sciences Nelson R Mandela School of Medicine University of KwaZulu‐Natal Berea South Africa