1 Strengthening Oncology Services Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. [email protected].
2 Department of Radiation Oncology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. [email protected].
3 Strengthening Oncology Services Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
4 SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
5 National Cancer Registry, National Health Laboratory Service, Johannesburg, South Africa.
6 Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
7 Sylvester Comprehensive Cancer Center and Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA.
8 Department of Surgery, School of Clinical Medicine, University of KwaZulu-Natal, KwaZulu-Natal, South Africa.
9 Department of Surgery, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
10 Department of Surgery, Ngwelezana Hospital, Empangeni and University of KwaZulu-Natal, Empangeni, KwaZulu-Natal, South Africa.
11 Departments of Surgery and Radiation Oncology, Grey's Hospital, University of KwaZulu-Natal, Pietermaritzburg, KwaZulu-Natal, South Africa.
12 Herbert Irving Comprehensive Cancer Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA.
13 Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA.
14 Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA.
15 Department of Radiation Oncology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
16 Division of Medical Oncology, Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
17 School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, 27 St Andrews Road, Parktown, Johannesburg, 2193, South Africa.
18 Environment and Lifestyle Epidemiology Branch, International Agency for Research On Cancer, (IARC/WHO), Lyon, France.
19 Global Health Research Institute, School of Human Development and Health, University of Southampton, Southampton, UK.