1. Internal Medicine Department, Brugmann University Hospital, Brussels, Belgium
2. Department of Pneumology, IRIS Hospitals South, Brussels, Belgium
3. Department of Pathology, Erasme Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
4. Department of Emergency and Intensive Care, IRIS Hospitals South, Brussels, Belgium
5. Department of Intensive Care, Brugmann University Hospital, Brussels, Belgium