1. Deaths: preliminary data for 2001;Arias;Natl Vital Stat Rep,2003
2. The global burden of disease, 1990-2020;Lopez;Nat Med,1998
3. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease;Pauwels;NHLBI/WHO Global Initiative for Chronic Obstructive Lung Disease (GOLD) Workshop summary. Am J Respir Crit Care Med,2001
4. Lung function testing: selection of reference values and interpretative strategies;American Thoracic Society;Am Rev Respir Dis,1991
5. Dynamic hyperinflation and exercise intolerance in chronic obstructive pulmonary disease;O'Donnell;Am J Respir Crit Care Med,2001