1. Department of Oncology and Radiotherapy, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania
2. Railways Clinical Hospital Iasi, Department of Surgery, 700506 Iași, Romania
3. Faculty of Dental Medicine, Oral Pathology Department, “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iași, Romania
4. Department of Clinical Laboratory, “St. Spiridon” Emergency Universitary Hospital, 700111 Iași, Romania
5. Faculty of Medicine, Oncology and Radiotherapy Department, “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iași, Romania
6. Regional Institute of Oncology, Department of Radiation Oncology, 700483 Iași, Romania