1. Division of Radiation Oncology, European Institute of Oncology, Milan, Italy;
2. Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy;
3. Department of Clinical Medicine and Surgery, Federico II University School of Medicine, Naples, Italy;
4. Unit of Medical Physics, European Institute of Oncology, Milan, Italy;
5. Division of Thoracic Surgery, European Institute of Oncology, Milan, Italy;
6. Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy;
7. Scientific Direction, European Institute of Oncology, Milan, Italy;
8. Clinical Division, CNAO National Center for Oncological Hadrontherapy, Pavia, Italy