1. Gastroenterology Unit; Division of Medicine; Lyell McEwin Hospital; University of Adelaide; Adelaide South Australia
2. California Pacific Medical Center; San Francisco California USA
3. Russells Hall Hospital; Dudley UK
4. Department of Gastroenterology; Waitemata DHB; North Shore New Zealand
5. Department of Gastroenterology; Westmead Hospital; Sydney New South Wales
6. Department of Gastroenterology; St.Vincent's Hospital; Melbourne Victoria Australia
7. Department of Statistics; SA Health; Adelaide South Australia
8. Department of Gastroenterology; Queen Elizabeth Hospital; Adelaide South Australia
9. Department of Gastroenterology; Royal Adelaide Hospital; Adelaide South Australia
10. Department of Gastroenterology; Flinders Medical Centre; Adelaide South Australia