1. Institute of Diagnostic and Interventional Radiology Hannover Medical School Hannover Germany
2. Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH) Member of the German Centre for Lung Research (DZL) Hannover Germany
3. Siemens Healthcare GmbH Erlangen Germany
4. Department of Respiratory Medicine Hannover Medical School Hannover Germany