1. Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
2. Division of Endocrinology, Abdominal Center, Helsinki University Hospital, Institute for Molecular Medicine Finland FIMM and Research Program for Clinical and Molecular Metabolism, University of Helsinki, and Folkhälsan Research Center, Helsinki, Finland
3. Lund University Diabetes Center, University of Lund, Malmo, Sweden
4. Department of Endocrinology & Nutrition, CIBERDEM, Hospital de la Santa Creu i Sant Pau & Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), Autonomous University of Barcelona, Barcelona, Spain
5. Division of Endocrinology, Diabetes and Metabolism, Diabetes Research Center, Baylor College of Medicine, Houston, TX
6. Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University and Key Laboratory of Diabetes Immunology, Central South University, Ministry of Education, National Clinical Research Center for Metabolic Diseases, Changsha, Hunan, China
7. Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University, Rome, Italy
8. Blizard Institute, Barts and The London School of Medicine and Dentistry, University of London, London, U.K.