Affiliation: | aDepartment of Radiology, Bethesda-Hospital, Heerstr. 219, Duisburg, 47053, Germany;bInstitute of Clinical Radiology, Lukas-Hospital, Neuss, Germany;cDepartment of Pneumology, Bethesda-Hospital, Duisburg, Germany;dDepartment of Anaesthesiology and Intensive Care Medicine, Bethesda-Hospital, Duisburg, Germany |