1. Doctoral School, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
2. Department of Gastroenterology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
3. Research Center of Gastroenterology and Hepatology, University of Medicine and Pharmacy of Craiova, 200638 Craiova, Romania
4. Academy of Medical Sciences, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania