1. Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania
2. Fourth General Surgery Department, Emergency University Hospital Bucharest, 050098 Bucharest, Romania
3. Faculty of Medicine, University “Lucian Blaga”, 550169 Sibiu, Romania
4. Department of Surgery, Emergency County Hospital Sibiu, 550245 Sibiu, Romania
5. Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021Bucharest, Romania
6. Department of Internal Medicine, Ilfov Emergency Clinic Hospital Bucharest, 022104 Bucharest, Romania
7. Third Clinical Infectious Disease Department, Clinical Hospital of Infectious and Tropical Diseases “Dr. Victor Babes”, 030303 Bucharest, Romania
8. Department of General Surgery, Emergency Clinic Hospital “Sf. Pantelimon” Bucharest, 021659 Bucharest, Romania
9. Faculty of Medicine, Ovidius University Constanta, 900470 Constanta, Romania
10. General Surgery Department, Emergency County Hospital Constanta, 900591 Constanta, Romania