1. Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. Department of Oncological Surgery I, Bucharest Oncological Institute, 022328 Bucharest, Romania
3. Department of Pathology, Bucharest Oncological Institute, 022328 Bucharest, Romania
4. Department of Thoracic Surgery, Bucharest Oncological Institute, 022328 Bucharest, Romania
5. Department of Medical Oncology, Bucharest Oncological Institute, 022328 Bucharest, Romania