1 The Medical Oncology Centre of Rosebank, Johannesburg, South Africa. Electronic address: [email protected].
2 Wits Donald Gordon Medical Centre, Johannesburg, South Africa; Department of Radiation Oncology, University of Witwatersrand, Johannesburg, South Africa.
3 Netcare Milpark Cardiothoracic Unit, Johannesburg, South Africa.
4 Wits Donald Gordon Medical Centre, Johannesburg, South Africa; Gritzman and Thatcher Laboratories, Inc., Johannesburg, South Africa.
5 The Medical Oncology Centre of Rosebank, Johannesburg, South Africa; Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.