1. Faculty of Medicine, Iuliu Hațieganu, University of Medicine and Pharmacy, 400347 Cluj-Napoca, Romania
2. Department of Oncology, Bistrița County Emergency Clinical Hospital, 420094 Bistrița, Romania
3. Department of Oncology, The Oncology Institute “Prof. Dr. Ion Chiricuţă”, 400015 Cluj-Napoca, Romania
4. Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700483 Iași, Romania
5. Department of Oncology, The Regional Institute of Oncology, 700483 Iași, Romania