1. Department of Hematology/OncologyUniversity Medical CenterGöttingen Germany
2. Institute of Neuropathology, University Medical CenterGöttingen Germany
3. EMBL HeidelbergMeyerhofstraße 1Heidelberg Germany
4. Department of NeurosurgeryUniversity Medical CenterGöttingen Germany
5. Department of Medical StatisticsUniversity Medical CenterGöttingen Germany
6. Department of Cardiovascular PhysiologyUniversity Medical CenterGöttingen Germany
7. Institute of Anatomy, University LeipzigLeipzig Germany