1. Doctoral School, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. Department of Oncology, Clinical Emergency Hospital, ‘Ovidius’ University, 900527 Constanţa, Romania
3. Department of Gastroenterology, Clinical Emergency Hospital, ‘Ovidius’ University, 900527 Constanţa, Romania
4. Department of Oncology, ‘Carol Davila’ Clinical Nephrology Hospital, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania