1. Chronic obstructive pulmonary disease,2003
2. Chronic obstructive pulmonary disease surveillance-United States, 1971-2000;Mannino;MMWR Surveill Summ,2002
3. Global strategy for the diagnosis, management and prevention of chronic obstructive pulmonary disease. NHLBI/WHO Global Initiative for Chronic Obstructive Lung Disease (GOLD) Workshop Summary;Pauwels;Am J Respir Crit Care Med,2001
4. Standards for the diagnosis and care of patients with chronic obstructive pulmonary disease;American Thoracic Society;Am J Respir Crit Care Med,1995
5. Guidelines on the management of COPD;The British Thoracic Society Standards of Care Committee;Thorax,1997