1. Department of Medicine; McMaster University and Firestone Institute for Respiratory Health; St. Joseph's Healthcare; Hamilton ON Canada
2. Institut Universitaire de cardiologie et de pneumologie de Québec; Québec QC Canada
3. Division of Pneumologie; University of Montreal; Montreal QC Canada
4. GlaxoSmithKline; Research Triangle Park NC USA
5. Meakins-Christie Laboratories; Research Institute of the McGill University Health Center; Montreal QC Canada