1 Medical Intensive Care Unit, Department of General Internal Medicine, Leuven, Belgium.
2 Department of Rheumatology, University Hospitals Leuven, Leuven, Belgium.
3 Department of Pulmonology, University Hospitals Leuven, Leuven, Belgium, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Leuven, Belgium.
4 Department of Thoracic Surgery, University Hospitals Leuven, Leuven, Belgium.
5 Department of Anesthesiology, University Hospitals Leuven, Leuven, Belgium.