1. Institute of Pathology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
2. Institute of Pathology, Division of Molecular Pathology, Charité, Berlin, Germany
3. German Cancer Consortium (DKTK), Germany
4. German Cancer Research Center (DKFZ), Heidelberg, Germany
5. Department of Medical Oncology, West German Cancer Centre, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
6. Department of Pneumology, Helios Klinikum Emil von Behring, Berlin, Germany
7. Department of Pathology, Division of Molecular Lung- and Pleurapathology, Medical University of Graz, Graz, Austria
8. Department of Pathology, Helios Klinikum Emil von Behring, Berlin, Germany
9. Ruhrlandklinik, West German Lung Centre, University Hospital Essen, University of Duisburg-Essen, Essen, Germany