1 Department for Diagnostic and Interventional Radiology, University Hospital Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany. christopher.kloth@uniklinik-ulm.de.
2 Department of Pediatrics and Adolescent Medicine, University Hospital Ulm, Eythstrasse 24, 89075, Ulm, Germany.
3 Department for Diagnostic and Interventional Radiology, University Hospital Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany.