1 Department of Intensive Care, Epicura Hospital, Hornu, Belgium; and Laboratory of Motion and Pulmonary Physiology, Provincial School of Hainaut HEPH-Condorcet, Tournai, Belgium. frederic.duprez@condorcet.be.
2 Health Economics, Hospital Management and Nursing Research Department, School of Public Health, Université Libre de Bruxelles, Campus Erasme, Brussels, Belgium.
3 Tivoli University Hospital, La Louvière, Belgium.
4 Hôpital de Nivelles - Jolimont, Nivelles, Belgium.
5 Service des urgences, Cliniques universitaires Saint-Luc, Brussels, Belgium.
6 Department of Geriatric Medicine, Cliniques universitaires Saint Luc, Brussels, Belgium.
7 Department of Emergency Care, Epicura Hospital, Hornu, Belgium.
8 Service de médecine interne et maladies infectieuses, Cliniques universitaires Saint-Luc, Brussels, Belgium.
9 Institut de recherche expérimentale et clinique, pôle de Pneumologie, ORL et Dermatologie, Université Catholique de Louvain, Brussels, Belgium; Service de Pneumologie, Cliniques universitaires Saint-Luc, Brussels, Belgium; and Secteur de Kinésithérapie et Ergothérapie, Cliniques universitaires Saint-Luc, Brussels, Belgium.