1. Department of Surgery, Klinikum rechts der Isar, Technical University, Munich, Germany
2. National Centre for Tumour Diseases, Klinikum rechts der Isar, Technical University, Munich, Germany
3. Department of Radiation Oncology, Klinikum rechts der Isar, Technical University, Munich, Germany
4. Department of Reconstructive Surgery, Klinikum rechts der Isar, Technical University, Munich, Germany
5. University of Heidelberg, Heidelberg, Klinikum rechts der Isar, Technical University, Munich, Germany