1. Department of Diabetes, Nutrition and Metabolic Diseases, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania.
2. National Institute of Diabetes, Nutrition and Metabolic Diseases “Prof N.C. Paulescu,” Bucharest, Romania.
3. Department of Medicine and Oncology, Faculty of Medicine, Semmelweis University, Budapest, Hungary.
4. Department of Medicine III and Karl Landsteiner institute for Metabolic Diseases and Nephrology, Clinic Hietzing, Vienna Healthcare Group, Vienna, Austria.
5. Department of Medicine, University of Central Florida College of Medicine, Orlando, Florida, USA.
6. Division of Endocrinology, Diabetes and Metabolism, University of South Carolina School of Medicine, Columbia, South Carolina, USA.
7. Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (Promise), University of Palermo, Palermo, Italy.