1. Department of General Surgery, Christchurch Public Hospital, Christchurch, New Zealand
2. Department of Colorectal Surgery, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
3. Department of General Surgery, University of Otago, Christchurch, New Zealand
4. Department of Colorectal Surgery, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
5. Department of Colorectal Surgery, Leeds General Infirmary, Leeds, UK
6. Department of Colorectal Surgery, Royal Marsden Hospital, London, UK