1. Department of Thoracic Surgery University of Duisburg‐Essen, Ruhrlandklinik Essen Germany
2. German Cancer Consortium (DKTK) Center Essen Germany
3. Institute of Pathology, University Hospital Essen, University of Duisburg‐Essen Essen Germany
4. Department of Radiation Oncology University Hospital Essen, University of Duisburg‐Essen Essen Germany
5. Department of Pediatrics III University Hospital Essen, University of Duisburg‐Essen Essen Germany
6. Department of Oncology University Hospital Essen, University of Duisburg‐Essen Essen Germany