1. Third Pediatric Department, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. Clinical Research and Evidence-Based Medicine Unit, Second Medical Department, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Diabetes Centre-Diabetic Foot Clinic, Second Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis, Greece
4. Harris Manchester College, University of Oxford, Oxford, UK