3 Clinical Department, National Center for Oncological Hadrontherapy (Fondazione CNAO), Pavia, Italy.
4 Department of Clinical, Surgical, Diagnostic, and Pediatric Sciences, University of Pavia, Pavia, Italy.
5 Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany.
6 Institute of Pathology, Ludwig-Maximilians-Universität (LMU) München, Munich, Germany.
7 Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy.