1 University of Heidelberg, Dept of Diagnostic and Interventional Radiology, Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), Heidelberg, Germany.
2 University Medical Center Goettingen, Institute for Diagnostic and Interventional Radiology, Goettingen, Germany.
3 Max-Planck-Institute for Experimental Medicine, Goettingen, Germany.