1. Hannover Medical School, Department of Cardiothoracic, Transplant and Vascular Surgery, Hannover, Germany
2. Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany
3. Hannover Medical School, Institute of Functional and Applied Anatomy, Hannover, Germany
4. Institute of Functional Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany