[1] Natl Hlth Lab Serv, Dept Anat Pathol, Durban, South Africa
[2] Univ KwaZulu Natal, Dept Anat Pathol, Durban, South Africa
[3] Inkosi Albert Luthuli Cent Hosp, Dept Neurosurg, Durban, South Africa
[4] Univ Kwazulu Natal, Discipline Pediat & Child Hlth, Durban, South Africa
[5] Univ KwaZulu Natal, Dr Pixley Ka Isaka Seme Mem Hosp, Dept Orthopaed Surg, 310 Bhejane St, ZA-4360 Durban, South Africa
[6] Univ KwaZulu Natal, Discipline Radiol, Durban, South Africa
[7] Ampath Pathol Labs, Dept Histopathol, Pietermaritzburg, South Africa