title: Preface.
authors.affiliation: Pulmonary Medicine/Critical Care Section, Providence VA Medical Center, 830 Chalkstone Avenue, Providence, RI 02908, USA. Electronic address: linda_nici@brown.edu.
authors.forename: Linda
authors.initials: L
authors.lastname: Nici
authors.affiliation: Pulmonary Medicine, Critical Care-Medical, Saint Francis Medical Group, Inc, Department of Pulmonary Medicine, 114 Woodland Street, Hartford, CT 06105, USA. Electronic address: rzuwalla@stfranciscare.org.
authors.forename: Richard L
authors.initials: RL
authors.lastname: ZuWallack
mesh_terms: D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000534:rehabilitation*