1. Retina and Macula Service, Ypapanti Eye Clinic, Athens, Greece
2. University of Athens, Medical School, 1st University Eye Clinic, G.Genimatas General Hospital of Athens, Athens, Greece
3. Department of Ophthalmology, Academic Teaching Hospital of St. John of God, Vienna, Austria
4. Department of Medical Physics, School of Medicine, University of Patras, Rion, Greece