1. Outpatient Clinic of Obesity, Diabetes and Metabolism, Second Department of Internal Medicine, University Hospital of Alexandroupolis, Democritus University of Thrace, Greece,
2. Department of Clinical Biochemistry (Vascular Disease Prevention Clinics), Royal Free Hospital campus, University College London Medical School, University College London (UCL), London NW3 2QG, United Kingdom
3. Outpatient Clinic of Obesity, Diabetes and Metabolism, Second Department of Internal Medicine, University Hospital of Alexandroupolis, Democritus University of Thrace, Greece
4. Biochemistry Laboratory, University Hospital of Alexandroupolis, Greece