1 Department of Diagnostic and Interventional Radiology, University of Leipzig, Leipzig, Germany. Electronic address: Hans-jonas.meyer@medizin.uni-leipzig.de.
2 Department of Radiology and Nuclear Medicine, Otto von Guericke University, Magdeburg, Germany.
3 Department of Epidemiology, Martin-Luther University of Halle (Saale), Halle (Saale), Germany.
4 Department of Radiology, Mühlenkreiskliniken Minden, Ruhr-University Bochum, Bochum, Germany.