title: Estimating the cost of COPD--a matter of perspective.
authors.forename: Douglas W
authors.initials: DW
authors.lastname: Mapel
mesh_terms: D017281:Cost of Illness; D017048:Health Care Costs / Q000639:trends*; D006801:Humans; D011379:Prognosis; D029424:Pulmonary Disease, Chronic Obstructive / Q000191:economics* / Q000628:therapy; D014481:United States