1. Departments of Diabetes and Endocrinology (S.J.P., J.J.C.), South Australia 5006, Australia
2. Robinson Institute (S.J.P., J.J.C.), School of Paediatrics and Reproductive Health
3. Discipline of Medicine (M.H., C.K.R.), South Australia 5005, Australia
4. Endocrine and Metabolic Unit (M.H.), South Australia 5000, Australia
5. Respiratory Medicine (A.J.M.), Women's and Children's Hospital, North Adelaide, South Australia 5006, Australia
6. Gastroenterology (S.K.), South Australia 5006, Australia
7. Data Management and Analysis Centre (T.S.), Discipline of Public Health, University of Adelaide, Adelaide, South Australia 5005, Australia
8. Department of Gastroenterology and Hepatology (C.K.R.), Royal Adelaide Hospital, Adelaide, South Australia 5000, Australia