1. Department of Surgery, Faculty of Health Sciences, University of KwaZulu-Natal,
South Africa
2. Department of Anatomical Pathology, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal,
South Africa
3. Division of Gastroenterology, Department of Medicine, Faculty of Health Sciences, University of Cape Town,
South Africa
4. Department of Clinical Medicine, Faculty of Health Sciences, University of KwaZulu-Natal,
South Africa