1 Pneumology and Critical Care Medicine, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany.
2 Translational Lung Research Center, Member of the German Center for Lung Research, Heidelberg, Germany.
3 Early Life Origins of Chronic Lung Disease, Research Center Borstel, Leibniz-Center for Medicine and Biosciences, Member of the German Center for Lung Research (DZL), Borstel, Germany.
4 Population Health and Occupational Disease, National Heart and Lung Institute, Imperial College, London, UK.
5 Academic Medical Center, University of Amsterdam, Dept of Respiratory Medicine and Dept of Intensive Care, Amsterdam, The Netherlands.
6 REVAL - Rehabilitation Research Center, BIOMED - Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium.