1. The University of Cape Town Leukaemia Centre and the Department of Haematology, Groote Schuur Hospital, Cape Town, South Africa
2. Department of Radiotherapy, Groote Schuur Hospital, Cape Town, South Africa
3. Department of Surgery, Groote Schuur Hospital, Cape Town, South Africa
4. Department of Anatomical Pathology, Groote Schuur Hospital, Cape Town, South Africa