1. Department of Diabetes, Nutrition and Metabolic Diseases, ‘Carol Davila’ University of Medicine and Pharmacy, 020475 Bucharest, Romania
2. Department of Internal Medicine, ‘Carol Davila’ University of Medicine and Pharmacy, 014461 Bucharest, Romania
3. Biomedical Department of Internal Medicine and Medical Specialities, University of Palermo, I-90139 Palermo, Italy
4. Ciccarone' Center for The Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, Baltimore, MD 21205-2196, USA
5. Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, I-90127 Palermo, Italy
6. Department of Endocrinology, ‘Carol Davila’ University of Medicine and Pharmacy, 011863 Bucharest, Romania