scholarly journals Tadalafil in patients with chronic obstructive pulmonary disease: a randomised, double-blind, parallel-group, placebo-controlled trial

2014 ◽  
Vol 2 (4) ◽  
pp. 293-300 ◽  
Author(s):  
Andrew R Goudie ◽  
Brian J Lipworth ◽  
Pippa J Hopkinson ◽  
Li Wei ◽  
Allan D Struthers
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