1. 1Clinical Research and Evidence-Based Medicine Unit, Second Medical Department, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. 2Diabetes Centre, Second Medical Department, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. 3Harris Manchester College, University of Oxford, Oxford, U.K.
4. 4Department of Endocrinology, 424 Military Hospital, Thessaloniki, Greece
5. 5Institute of Applied Health Research, University of Birmingham, Birmingham, U.K.
6. 6Diabetes, Endocrinology, and Metabolism Section, Medical Department I, Katholisches Klinikum Bochum, St. Josef-Hospital, Ruhr University Bochum, Bochum, Germany