1. Discipline of Medicine (P.K., J.M.W., R.J.L.F., M.H., K.L.J., C.K.R.), University of Adelaide, Royal Adelaide Hospital, Adelaide SA 5000, Australia;
2. Department of Nuclear Medicine, Positron Emission Tomography, and Bone Densitometry (M.B.), Royal Adelaide Hospital, Adelaide SA 5000, Australia;
3. Gastrointestinal Research Unit (A.J.S.), University Medical Center Utrecht, 3584CX Utrecht, The Netherlands;
4. Department of Gastroenterology and Hepatology (R.H.H., C.K.R.), Royal Adelaide Hospital, Adelaide SA 5000, Australia