1. UMF Craiova Doctoral School, University of Medicine and Pharmacy of Craiova, Craiova 200349, Romania
2. Department of Nephrology, University of Medicine and Pharmacy of Craiova, Craiova 200349, Romania
3. Department of Anesthesiology and Intensive Care, Faculty of Medicine and Pharmacy, Sibiu 550169, Romania
4. Department of Internal Medicine , University of Medicine and Pharmacy of Craiova, Craiova 200349, Romania
5. Department of Surgery, University of Medicine and Pharmacy of Craiova, Craiova 200349, Romania