1. Department of Medicine, Adelaide University , Adelaide, SA 5000 , Australia
2. Endocrine and Metabolic Unit, Royal Adelaide Hospital , Adelaide, SA 5000 , Australia
3. Endocrine and Diabetes Services, The Queen Elizabeth Hospital , Woodville South, SA 5011 , Australia
4. Systems Neuroendocrinology Research Group, University of Bristol , Bristol, BS1 3NY , UK