title: Response.
authors.affiliation: Pulmonary, Allergy, and Critical Care Division, University of Pennsylvania, Philadelphia, PA. Electronic address: katherine.courtright@uphs.upenn.edu.
authors.forename: Katherine
authors.initials: K
authors.lastname: Courtright
authors.affiliation: Pulmonary, Allergy, and Critical Care Division, University of Pennsylvania, Philadelphia, PA; Department of Medicine, University of Pennsylvania, Philadelphia, PA.
authors.forename: Scott
authors.initials: S
authors.lastname: Manaker
mesh_terms: D006801:Humans; D006278:Medicare / Q000191:economics*; D029424:Pulmonary Disease, Chronic Obstructive / Q000628:therapy*; D012138:Respiratory Therapy / Q000191:economics*