title: Points of importance in long term intervention studies in CB/COAD.
authors.affiliation: Department of Pulmonary Medicine, Renströmska Hospital, Gothenburg University, Sweden.
authors.forename: C G
authors.initials: CG
authors.lastname: Löfdahl
authors.forename: S
authors.initials: S
authors.lastname: Larsson
authors.forename: B E
authors.initials: BE
authors.lastname: Skoogh
mesh_terms: D001991:Bronchitis / Q000517:prevention & control / Q000628:therapy*; D002908:Chronic Disease; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000517:prevention & control / Q000628:therapy*; D012907:Smoking / Q000009:adverse effects / Q000628:therapy