1. Department of Neurology; Hannover Medical School; Hannover Germany
2. Integrated Research and Treatment Centre Transplantation; Hannover Medical School; Hannover Germany
3. Department of Nuclear Medicine; Hannover Medical School; Hannover Germany
4. Department of Diagnostic and Interventional Neuroradiology; Hannover Medical School; Hannover Germany
5. Department of Radiology and Nuclear Medicine; VU University Medical Center; Amsterdam The Netherlands