1. Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University Hospital of Verona, Piazzale Stefani, 1, 37126 Verona, Italy
2. Nutrition and Metabolism, Faculty of Medicine, University of Southampton, Southampton, UK
3. Southampton National Institute for Health Research Biomedical Research Centre, University Hospital Southampton, Southampton General Hospital, Southampton SO16 6YD, UK