1. School of Advanced Doctoral Studies, “Dunarea de Jos” University, 800008 Galati, Romania
2. Faculty of Medicine and Pharmacy, “Dunarea de Jos” University, 800008 Galati, Romania
3. Department of Pediatrics, “Sf. Ioan” Clinical Hospital for Children, 800487 Galati, Romania
4. Clinical Department, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
5. “Sf. Luca” Chronic Diseases Hospital, 041915 Bucharest, Romania
6. Department of Oncology, “Sf. Andrei” County Emergency Clinical Hospital, 800179 Galati, Romania