[1] Univ Cologne, Dept Neurol, Fac Med, Cologne, Germany
[2] Univ Cologne, Univ Hosp Cologne, Cologne, Germany
[3] Res Ctr Juelich, Inst Neurosci & Med INM 3 4, Julich, Germany
[4] Univ Aachen, Ctr Integrated Oncol CIO, Cologne, Germany
[5] Univ Bonn, Ctr Integrated Oncol CIO, Cologne, Germany
[6] Univ Cologne, Ctr Integrated Oncol CIO, Cologne, Germany
[7] Univ Duesseldorf, Ctr Integrated Oncol CIO, Cologne, Germany
[8] Univ Cologne, Dept Stereotaxy & Funct Neurosurg, Fac Med, Cologne, Germany