1. Pulmonary Rehabilitation Unit, Morlaix Hospital Centre; European University of Occidental Brittany; Brest France
2. Department of Anesthesiology and Perioperative Medicine; Universitair Ziekenhuis Brussel; Brussels Belgium
3. Department of Internal Medicine and Chest Diseases, EA3878 (G.E.T.B.O.), CIC INSERM 0502; University Hospital of Brest, European University of Occidental Brittany; Brest France
4. Institut de Recherche Expérimentale et Clinique (IREC), Pôle de Pneumologie, ORL & Dermatologie; Université Catholique de Louvain; Brussels Belgium
5. Service de Pneumologie, Cliniques Universitaires Saint-Luc; Brussels Belgium
6. Cliniques Universitaires Saint-Luc, De Médecine Physique Et Réadaptation Service; Brussels Belgium