1. Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
2. Department of Radiation Oncology, University Hospital, LMU Munich, Ziemsenstrasse 1, 80336 Munich, Germany
3. German Center for Lung Research (DZL), Comprehensive Pneumology Center Munich (CPC-M), 81377 Munich, Germany
4. German Cancer Consortium (DKTK), Partner Site Munich, 81377 Munich, Germany