1. Research Centre on Aging, University Institute of Geriatrics of Sherbrooke, University of Sherbrooke, Sherbrooke, Quebec, Canada.
2. Respiratory Division, Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, Quebec, Canada.
3. Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, Quebec, Canada.