1. University of Western Australia (A.J.C., G.F.W., T.A.M., B.G.A.S.), School of Medicine and Pharmacology, Royal Perth Hospital, Perth 6847, Western Australia
2. Department of Endocrinology and Diabetes (A.J.C.), Royal Perth Hospital, Perth 6847, Western Australia
3. Keogh Institute for Medical Research (B.G.A.S.), Nedlands 6009, Western Australia
4. Department of Endocrinology and Diabetes (B.G.A.S.), Sir Charles Gairdner Hospital, Nedlands 6009, Western Australia