1. 3rd Medical Department, Cardiology and Intensive Care Medicine, Klinik Ottakring (Wilhelminenhospital), Vienna, Austria;
2. Ludwig Boltzmann Institute for Lung Health, Vienna, Austria;
3. Department of Respiratory and Pulmonary Diseases, Clinic Penzing, and
4. Faculty of Medicine, Sigmund Freud University, Vienna, Austria;
5. NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, the Netherlands;
6. Clinic Hietzing, Vienna Healthcare Group, Vienna, Austria;
7. Department of Cardiology, Klinikum Wels-Grieskirchen, Wels, Austria; and
8. Catedra Salud Respiratoria, Universidad de Barcelona, Clinic Barcelona, Instituto de Investigaciones Biomédicas August Pi i Sunyer, Centro de Investigación Biomédica en Red Enfermedades Respiratorias, Barcelona, Spain