1Department of Radiation Oncology, Centro di Riferimento Oncologico of Aviano, Italy
2Department of Epidemiology and Biostatistics, Centro di Riferimento Oncologico of Aviano, Italy
3Department of Nuclear Medicine, Centro di Riferimento Oncologico of Aviano, Italy
4Department of Medical Oncology, Centro di Riferimento Oncologico of Aviano, Italy
5Department of Medical Physics, Centro di Riferimento Oncologico of Aviano, Italy
6Department of Thoracic Surgery, Mestre General Hospital, Italy
7Department of Surgery, Centro di Riferimento Oncologico of Aviano, Italy