1. Department of Surgery School of Medicine Faculty of Medical and Health Sciences, University of Auckland Auckland New Zealand
2. Department of Nutrition and Dietetics Auckland City Hospital Auckland New Zealand
3. Discipline of Nutrition and Dietetics Faculty of Medical and Health Sciences University of Auckland Auckland New Zealand
4. Department of Integrated Traditional Chinese and Western Medicine Sichuan Provincial Pancreatitis Centre West China Hospital of Sichuan University Chengdu China
5. Department of General Surgery Auckland City Hospital Auckland New Zealand