3 II. Department of Respiratory and Critical Care Medicine, Otto Wagner Hospital, Vienna, Austria.
4 Department for Pulmonary Medicine, Johannes Kepler University Linz, Linz, Austria.
5 Lung specialist, Bad Ischl, Austria.
6 Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.
7 Department of Pulmonology, Klinikum Klagenfurt, Klagenfurt, Austria.
8 Pneumology, Paracelsus Medical University, Salzburg, Austria.
9 Department of Respiratory and Lung Diseases, Hietzing Hospital, Karl Landsteiner Institute for Experimental and Clinical Pulmonology, Vienna, Austria.