1. Anaesthesia Intensive Care Unit, Department Orthopedics, University of Medicine and Pharmacy Carol Davila of Bucharest, 020021 Bucharest, Romania
2. Department of Administrative Sciences and Regional Studies, Dunarea de Jos University of Galati, 800008 Galati, Romania
3. Department of Business Administration, Dunarea de Jos University of Galati, 800008 Galati, Romania
4. Departament of Finance, Accounting and Economic Theory, Transilvania University of Brasov, 500036 Brasov, Romania
5. Department of Medical Clinical, Dunarea de Jos University of Galati, 800008 Galati, Romania