In this issue:
Does immune competence predict clinical outcomes in COPD?
FeNO is not associated with mortality in patients with COPD
Prevalence and risk factors for COPD in people with preserved ratio impaired spirometry
International differences in the frequency of AECOPD reported in clinical trials
Severe pulmonary hypertension in COPD
Delirium in elderly patients with COPD and respiratory failure
Prevalence and clinical impact of frailty in COPD
Cardiovascular risk factors in patients with COPD
Factors influencing referral to pulmonary rehabilitation programmes
Adherence and persistence to once-daily single-inhaler vs multiple-inhaler triple therapy
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