1. The definition of emphysema: report of a National Heart, Lung, and Blood Institute, Division of Lung Disease Workshop;Snider;Am. Rev. Respir. Dis.,1985
2. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: National Heart, Lung, and Blood Institute and World Health Organization Global Initiative for Chronic Obstructive Lung Disease (GOLD): executive summary;Pauwels;Respir. Care,2001
3. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: GOLD executive summary;Rabe;Am. J. Respir. Crit. Care Med.,2007
4. The GOLD classification has advanced understanding of COPD;Calverley;Am. J. Respir. Crit. Care Med.,2004
5. The nature of small-airway obstruction in chronic obstructive pulmonary disease;Hogg;N. Engl. J. Med.,2004