1. Ophthalmology, Dobry Wzrok Ophthalmological Clinic, Gdansk, Poland
2. Ophthalmology, University Hospital Wroclaw, Poland
3. Chair of Ophthalmology, Department of Vitreoretinal Surgery, Medical University of Lublin, Poland
4. Department of Ophthalmology, Eye Clinic, Justus Liebig University, University Hospital Giessen and Marburg, Campus Giessen, Giessen, Germany