1. Department of Anaesthesia, Inkosi Albert Luthuli Central Hospital, Mayville, South Africa
2. Department of Anesthesia, Critical Care and Pain Management, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Umbilo, South Africa
3. Beck, Danchin & Partners, Musgrave Park, Berea, South Africa
4. Thekwini-Durban, KwaZulu-Natal, South Africa