1. Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany
2. Department of Anesthesiology and Intensive Care Medicine, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
3. Department of Neurology, Aarhus University Hospital, Aarhus, Denmark
4. Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
5. Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
6. Department of Radiology, Neuroendovascular Service, Texas Stroke Institute, Fort Worth
7. Department of Neuroradiology, Aarhus University Hospital, Aarhus, Denmark
8. German Cancer Consortium (DKTK), German Cancer Research Center, Heidelberg, Germany
9. Department of Anesthesia, Section of Neuroanesthesia, Aarhus University Hospital, Aarhus, Denmark
10. Department of Radiology, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
11. Department of Neurology, Klinikum Kassel, Kassel, Germany