1. Second Medical Department and Diabetes Centre, NIMTS Hospital, 12 Monis Petraki, 11521 Athens, Greece
2. Department of Diabetology and Internal Medicine, Warsaw Medical University, Warsaw, Poland
3. Faculty of Medicine, University of Belgrade, Clinic for Endocrinology, Diabetes and Metabolic Diseases, CCS, Belgrade, Serbia
4. Department of Diabetes, Saint Bartholomew’s Hospital, University of London and Blizard Institute, EC1A 7BE London, UK
5. Diabetic Foot Clinic-Diabetes Centre, Second Department of Internal Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
6. Department of Endocrinology, Diabetology and Nutrition, Jean Verdier Hospital, AP-HP, Paris Nord University, CRNH-IdF, CINFO, 93140 Bondy, France