5O'Reilly P, Barley W. Long-term continuous oxygen treatment in chronic obstructive pulmonary disease:Proper use, benefits and unresolved issues[J]. Curr Opin Pulm Med,2007,13(2) : 120-124.
6Planas M, Alvarez J, Garcia-Peris PA,et al. Nutritional support and quality of life in stable chronic obstructive pulmonary disease (COPD) patients[J]. Clin Nutr,2005,24(3) :433-441.
7Wouters EF. Management of severe COPD[J]. Lancet,2004,364(9437): 883-895.
8Nici L, Donner C, Wouters E, et al. American Thoracic Society/European Respiratory Society Statement on Pulmonary Rehabilitation [J]. Am J Respir Crit Care Med, 2006, 173(12):1390-1413.
9American College of Chest Physicians/American Association of Cardiovas- cular and Pulmonary Rehabilitation. Pulmonary rehabilitation: Joint ACCP/AACVPR evidence-based guidelines. ACCP/AACVPR tktlmonary Rehabilitation Guidelines Panel[J]. Chest, 1997, 112(5) : 1363-1396.
10Revill SM,Beck KE,Morgan MD. Comparision of the peak exercise response measured by the ramp and 1-min step cycle exercise protocols in patients with exertional dyspnea[J]. Chest,2002,121(4) : 1099- 1105.