1. Institute of Pathology; Technical University of Munich; Munich Germany
2. Department of Head and Neck Surgery; Klinikum Rechts der Isar; Munich Germany
3. Institute of Pathology; Heidelberg University; Heidelberg Germany
4. Translational Lung Research Center Heidelberg; Member of the German Center for Lung Research; Heidelberg Germany
5. National Center of Tumor Diseases (NCT); Heidelberg Germany
6. German Cancer Consortium (DKTK); Germany