1. Department of Ophthalmology, Medical School, University of Patras, Rion, Achaia, Greece
2. Department of Biomedical Sciences, University of West Attica, Athens, Greece
3. Department of Cytology, 417 VA Hospital (NIMTS), Athens, Greece
4. Department of Chemistry, University of Crete, Voutes, Heraklion, Greece
5. Department of Chemistry, University of Patras, Rion, Achaia, Greece