1. Institute of Pathology University Medical Centre Göttingen Göttingen Germany
2. Department of Oral and Maxillofacial Surgery University Medical Centre Göttingen Göttingen Germany
3. Department of Thoracic and Cardiovascular Surgery University Medical Centre Göttingen Göttingen Germany
4. Bioanalytical Mass Spectrometry Group Max Planck Institute for Biophysical Chemistry Göttingen Germany
5. Bioanalytics, Institute for Clinical Chemistry University Medical Centre Göttingen Göttingen Germany
6. Department of Medicine II, Haematology/Oncology Goethe University Frankfurt Germany
7. German Cancer Research Centre and German Cancer Consortium Heidelberg Germany