Affiliation: | (1) Department of Diagnostic and Interventional Radiology, University Hospital Hamburg Eppendorf (UKE), Martinistrasse 52, D-20246 Hamburg, Germany, DE;(2) Institute of Diagnostic Radiology, University Hospital Düsseldorf, Moorenstr. 5, D-40225 Düsseldorf, Germany, DE;(3) Department of Gastroenterolgy, University Hospital Düsseldorf, Moorenstr. 5, D-40225 Düsseldorf, Germany, DE |