1. General Surgery Department, Carol Davila Nephrology Hospital Bucharest, 020021 Bucharest, Romania
2. Tenth Department of Surgery, University of Medicine and Pharmacy “Carol Davila” Bucharest, 050474 Bucharest, Romania
3. Oncological Institute “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
4. Department of Periodontology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
5. Sixth Department of Surgery, University of Medicine and Pharmacy of Craiova, Craiova Emergency Clinical 7 Hospital, 200642 Craiova, Romania