1. Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
2. Clinic for Diagnostic and Interventional Radiology, Klinikum Stuttgart, Stuttgart, Germany
3. Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
4. Department of General Pathology, University Hospital Heidelberg, Heidelberg, Germany
5. Department of General Pathology, University Hospital Mainz, Mainz, Germany
6. Clinic for Radiology, Minimally-Invasive Therapies and Nuclear Medicine, SLK Kliniken Heilbronn GmbH, Heilbronn, Germany