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. 2021 Mar 1;203(5):647–649. doi: 10.1164/rccm.202009-3697LE

Figure 2.

Figure 2.

Observed 30-day mortality among cases hospitalized for chronic obstructive pulmonary disease with and without pneumonia in 2015–2016 versus 2016–2017. COPD = chronic obstructive pulmonary disease.