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. 2020 Dec 29;15:3397–3406. doi: 10.2147/COPD.S286149

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© 2020 Lee et al.

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Survival analysis of the development of pneumonia using Kaplan–Meier curve according to the use of inhaled corticosteroid (ICS) (A), cumulative dose of ICS (B), and daily dose of ICS (C).