scholarly journals A longitudinal, retrospective cohort study on the impact of roflumilast on exacerbations and economic burden among chronic obstructive pulmonary disease patients in the real world

Author(s):  
Yin Wan ◽  
Shawn Sun ◽  
Shelby Corman ◽  
Xinyue Huang ◽  
Xin Gao ◽  
...  
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