1 Department of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany.
2 emka medical GmbH, Aschaffenburg, Germany.
3 Department of Internal Medicine, Universities of Giessen and Marburg Lung Center (UGMLC), Institute for Lung Health (ILH), German Center for Lung Research (DZL), Giessen, Germany.
4 Krankenhaus Nordwest, Frankfurt am Main, Frankfurt, Germany.