1. National Research Council Institute of Biomedical Engineering, Padova, Italy
2. Department of Internal Medicine, University of Pisa, Pisa, Italy
3. Clinical Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
4. INSERM U258, Villejuif, France
5. Clinical Center of Serbia, Institute for Endocrinology, Diabetes and Metabolic Diseases, Belgrade, Serbia
6. Department of Medicine, University of Newcastle upon Tyne, Newcastle upon Tyne, U.K.