Role of cardiopulmonary exercise testing and the criteria used to determine disability in patients with severe chronic obstructive pulmonary disease.

1994 ◽  
Vol 150 (3) ◽  
pp. 747-751 ◽  
Author(s):  
F Ortega ◽  
T Montemayor ◽  
A Sánchez ◽  
F Cabello ◽  
J Castillo
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