1. Department of Oncology, Fundeni Clinical Institute, 022328 Bucharest, Romania
2. Department of Internal Medicine, Fundeni Clinical Institute, 022328 Bucharest, Romania
3. Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
4. Department of Gastroenterology, Fundeni Clinical Institute, 022328 Bucharest, Romania
5. Department of Pharmacoeconomics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
6. Department of Oncology, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania
7. Department of Oncology, County Clinical Emergency Hospital, 200642 Craiova, Romania
8. Department of Surgery, Fundeni Clinical Institute, 022328 Bucharest, Romania
9. Faculty of Medicine, Titu Maiorescu University, 031593 Bucharest, Romania