1. Department of Ophthalmology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Greece
2. Microbiology Department, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
3. Department of Ophthalmology, Birmingham and Midland Eye Centre, Birmingham, UK
4. Hematology Laboratory, Unit of Molecular Biology, University Hospital of Ioannina, Ioannina, Greece
5. Department of Anatomy-Histology-Embryology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
6. Immunology Unit, NeURos Research Group, NeuroVitae Research Center, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia