1. Department of Structural Mechanics, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Gdańsk 80-233, Poland
2. Department of Otolaryngology, Faculty of Medicine, Medical University of Gdańsk, Gdańsk 80-210, Poland
3. Department of Ophthalmology, Faculty of Medicine, Medical University of Gdańsk, Gdańsk 80-210, Poland