1. Department of Ophthalmology, Hippokration General Hospital, Athens, Greece
2. Department of Neurology, Agios Pavlos General Hospital, Thessaloniki, Greece
3. Department of Ophthalmology, Konstantopoulio General Hospital, Agias Olgas, Nea Ionia, Athens, Greece
4. Private Practice, Kalamata, Greece
5. Department of 1Ophthalmology, Ophthalmiatreio Eye Hospital of Athens, Athens, Greece