1. 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
2. Standards for the diagnosis and care of patients with chronic obstructive pulmonary disease;American Thoracic Society;Am J Respir Crit Care Med,1995
3. COPD: overview of definitions, epidemiology, and factors influencing its development;Rennard;Chest,1998
4. National Center for Health Statistics. Deaths: final data for 1999. Hyattsville, MD: US Department of Health and Human Services, CDC, 2001. National Vital Statistics Report; vol 49, no. 8. Available at http//www.cdc.gov/nchs/releases/01facts/99mortality.htm
5. National Heart, Lung, and Blood Institute. Morbidity & Mortality: Chartbook on Cardiovascular, Lung, and Blood Diseases. U.S. Department of Health and Human Services, Public Health Service, National Institutes of Health, Bethesda, MD. 1998. Available from: URL: http://www.nhlbi.nih.gov/nhlbi/seiin/other/cht-book/htm