scholarly journals Productivity losses in chronic obstructive pulmonary disease: a population-based survey

2014 ◽  
Vol 1 (1) ◽  
pp. e000049 ◽  
Author(s):  
Marta Erdal ◽  
Ane Johannessen ◽  
Jan Erik Askildsen ◽  
Tomas Eagan ◽  
Amund Gulsvik ◽  
...  
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