1. Epidemiology of chronic obstructive pulmonary disease;Anto;European Respiratory Journal,2001
2. ATS standards for the diagnosis and care of patients with chronic obstructive pulmonary disease;American Journal Respiratory Critical Care Medicine,1995
3. American Thoracic Society European Respiratory Society Standards for the diagnosis and management of patients with COPD http://www.thoracic.org 2004
4. Short-term ambulatory oxygen for chronic obstructive pulmonary disease;Bradley;The Cochrane Database of Systematic Reviews,2005
5. Exercise training in chronic obstructive lung disease;Casaburi,1993