1. School of Medicine, National and Kapodistrian University of Athens, 1st University Eye Clinic, G. Gennimatas General Hospital of Athens, Athens, Greece
2. School of Medicine, University of Patras, University Eye Clinic, Rion University Hospital, Patras, Greece
3. 3rd Department of Cardiology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece