1. Second Propedeutic Medical Department, Aristotle University of Thessaloniki, Thessaloniki, Greece2Clinical Research and Evidence-Based Medicine Unit, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. Department of Hygiene and Epidemiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Clinical Research and Evidence-Based Medicine Unit, Aristotle University of Thessaloniki, Thessaloniki, Greece4Harris Manchester College, University of Oxford, Oxford, United Kingdom
4. Second Propedeutic Medical Department, Aristotle University of Thessaloniki, Thessaloniki, Greece