1. Department of Ophthalmology, School of Health Sciences, Faculty of Medicine, University of Ioannina, Ioannina, Greece
2. Department of Pulmonology, School of Health Sciences, Faculty of Medicine, University of Ioannina, Ioannina, Ioannina, Greece
3. Laboratory of Microbiology, School of Health Sciences, Faculty of Medicine, University of Ioannina, Ioannina, Greece
4. Department of Radiology, University Hospital of Ioannina, Ioannina, Greece
5. School of Health Sciences, Faculty of Medicine, University of Ioannina, Ioannina, Greece