Editorial introductions
Electronic cigarettes
Chronic obstructive pulmonary disease
Nonadherence in chronic obstructive pulmonary disease patients
Predictors of chronic obstructive pulmonary disease exacerbations
The reliability and validity of patient-reported chronic obstructive pulmonary disease exacerbations
Use of long-term macrolide therapy in chronic obstructive pulmonary disease
Understanding nontypeable Haemophilus influenzae and chronic obstructive pulmonary disease
Profiles of chronic obstructive lung disease
Marijuana and lung diseases
Obstructive airway disease in urban populations
Renal and hepatobiliary dysfunction in chronic obstructive pulmonary disease
Man-made mineral fibers and interstitial lung diseases
Nonoccupational and occupational exposure to isocyanates
Imaging in occupational and environmental lung disease