Increased mortality associated with frequent exacerbations in COPD patients with mild-to-moderate lung function impairment, and smokers with normal spirometry.
Fortis S, Wan ES, Kunisaki K, Eyck PT, Ballas ZK, Bowler RP, Crapo JD, Hokanson JE, Wendt C, Silverman EK, Comellas AP. Increased mortality associated with frequent exacerbations in COPD patients with mild-to-moderate lung function impairment, and smokers with normal spirometry. Respir Med X. 2021 Nov; 3.