1. Faculty of Medicine; Vilnius University; Vilnius Lithuania
2. Centre of Eye Diseases; Vilnius University Hospital Santariskiu Klinikos; Vilnius Lithuania
3. Centre of Ear, Nose and Throat; Vilnius University Hospital Santariskiu Klinikos; Vilnius Lithuania
4. Department of Clinical Pharmacology; Medical University of Vienna; Vienna Austria
5. Center for Medical Physics and Biomedical Engineering; Medical University of Vienna; Vienna Austria