1. Hannover Medical SchoolHannover, Germany
2. Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Member of the German Center for Lung ResearchHannover, Germany
3. REBIRTH Cluster of ExcellenceHannover, Germany
4. University of BernBern, Switzerlandand
5. Charité - Universitaetsmedizin BerlinBerlin, Germany