1. Department of Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
2. Department of General, Abdominal and Transplant Surgery, Hannover Medical School, Hannover, Germany
3. Member of the German Centre for Lung Research (DZL/BREATH), Hannover, Germany
4. Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany