Dyspnea in patients with chronic obstructive pulmonary disease: does dyspnea worsen longitudinally in the presence of declining lung function?
Lareau SC, Meek PM, Press D, Anholm JD, Roos PJ. Dyspnea in patients with chronic obstructive pulmonary disease: does dyspnea worsen longitudinally in the presence of declining lung function? Heart Lung. 1999 Jan-Feb; 28(1):65-73.