1. Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania
2. Ophthalmology Department, Emergency University Hospital Bucharest, 050098 Bucharest, Romania
3. Department of Nursing and Dentistry, Faculty of General Medicine, ‘Lucian Blaga’ University of Sibiu, 550169 Sibiu, Romania
4. Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania
5. Faculty of Medicine, Ovidius University Constanta, 900470 Constanta, Romania
6. General Surgery Department, Emergency County Hospital Constanta, 900591 Constanta, Romania
7. Faculty of Medicine, University “Lucian Blaga”, 550169 Sibiu, Romania
8. Department of Surgery, Emergency County Hospital Sibiu, 550245 Sibiu, Romania