1. Department of Internal Medicine IV, University Hospital of Munich, LMU Munich, Munich, Germany.
2. Department of Radiation Oncology, Technische Universitaet Muenchen, Munich, Germany.
3. Clinical Biochemistry Group, Department of Internal Medicine IV, University Hospital of Munich, LMU Munich, Munich, Germany.
4. Department of Radiation Oncology, University Hospital of Munich, LMU Munich, Munich, Germany.
5. Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany.
6. Department of Pharmacy, Center of Drug Research, Pharmaceutical Biotechnology, LMU Munich, Munich, Germany.