1. Department of Surgery, University of Munich, Munich, Germany.
2. DKTK, German Cancer Research Center (DKFZ), Heidelberg, Germany.
3. Institute of Molecular Immunology, Helmholtz Center for Environment and Health, Munich, Germany.
4. Department of Surgery, University of Hamburg-Eppendorf, Hamburg, Germany.
5. Clinical Biochemistry Group, Medizinische Klinik und Policlinic IV, University of Munich, Munich, Germany.
6. Department of Surgery, Otto-von-Guericke University, Magdeburg, Germany.