[1] Univ Tubingen Hosp, Dept Clin Pharmacol, D-72076 Tubingen, Germany
[2] Univ Tubingen Hosp, Dept Radiooncol, D-72076 Tubingen, Germany
[3] Univ Tubingen Hosp, Dept Neurosurg, D-72076 Tubingen, Germany
[4] Univ Tubingen Hosp, Interfak Inst Biochem, D-72076 Tubingen, Germany
[5] Univ Leipzig, Inst Biochem, D-7010 Leipzig, Germany