1. Liver Unit, Division of Digestive Diseases, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London W2 1NY, UK
2. Section of Endocrinology and Metabolic Medicine, St Mary’s Hospital, Imperial College NHS Trust, London W2 1NY, UK
3. Department of Cellular Pathology, Faculty of Medicine, Imperial College London, London W2 1NY, UK