1. Institute of Neuropathology, University Medical Center Göttingen; Göttingen 37075 Germany
2. Institute of Molecular Medicine, University of Mainz; Mainz 55131 Germany
3. Sartorius-Stedim Biotech GmbH; Göttingen 37079 Germany
4. Paul-Flechsig-Institute for Brain Research, University of Leipzig; Leipzig 04103 Germany
5. Clinical Neuroscience, Max-Planck-Institute of Experimental Medicine; Göttingen 37075 Germany