1 HPB Unit, Department of Surgery, Groote Schuur Hospital and University of Cape Town Health Sciences Faculty, Observatory, Cape Town, 7925, South Africa. jej.krige@uct.ac.za.
2 HPB Unit, Department of Surgery, Groote Schuur Hospital and University of Cape Town Health Sciences Faculty, Observatory, Cape Town, 7925, South Africa.
3 Surgical Gastroenterology and Trauma Centre, Groote Schuur Hospital and University of Cape Town Health Sciences Faculty, Observatory, Cape Town, 7925, South Africa.