1. Doctoral School, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania
2. Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania
3. Fourth General Surgery Department, Emergency University Hospital Bucharest, 050098 Bucharest, Romania
4. Faculty of Medicine, University Lucian Blaga Sibiu, 550169 Sibiu, Romania
5. Department of Surgery, Emergency County Hospital Sibiu, 550245 Sibiu, Romania
6. Faculty of Medicine, Ovidius University Constanta, 900470 Constanta, Romania
7. General Surgery Department, Emergency County Hospital Constanta, 900591 Constanta, Romania
8. Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania
9. Department of Internal Medicine, Ilfov Emergency Clinic Hospital Bucharest, 022104 Bucharest, Romania
10. Department of Surgical Oncology, Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
11. Department of General Surgery, Colentina Clinic Hospital, 020125 Bucharest, Romania