1. Department of Pathophysiology, Medical Faculty, University of Prishtina, Prishtinë, Kosovo
2. Department of Ophthalmology, University Clinical Centre of Kosova, Prishtinë, Kosovo
3. Department of Ophthalmology, Medical University of Granz, Auenbruggerplatz, Granz, Austria
4. Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, Belfast, UK