1. Department of Radiology, Airway Research Center North, Member of the German Center for Lung Research (DZL), LungenClinic Grosshansdorf, Germany
2. Diagnostic and Interventional Radiology, Academic Teaching Hospital of the University of Hamburg, Amalie Sieveking-Hospital, Hamburg, Germany
3. Department of Pulmonology, Airway Research Center North, Member of the German Center for Lung Research (DZL), LungenClinic Grosshansdorf, Germany