1. University Hospital of HeidelbergHeidelberg, Germany
2. German Center for Lung ResearchHeidelberg, Germany
3. University of HeidelbergHeidelberg, Germany
4. Charité-Universitätsmedizin BerlinBerlin, Germany
5. Berlin Institute of HealthBerlin, Germany
6. Hufeland HospitalBad Langensalza, Germanyand
7. Boehringer Ingelheim Pharma GmbH & Co. KGBiberach an der Riß, Germany