1Chailleux E,Laaban JP,Veale D.Prognostic Value of 2 nutritional depletion in patients with COPD treated by long- term oxygen therapy:date from the ANTADIR observatory [J]. Chest,2003,123(5): 1460.
4Andersson I,Johansson K,Larsson S,et al.Long-term oxygentherapy and quality of life in elderly patients hospitalised due to severe exacerbation of COPD.A 1 year follow-up study[J].Respir Med,2002,96(11):944.
2GOLD Executive Committee[DB/OL].Guidelines:Global Strategy for Diagnosis,Management,and Prevention of COPD,November 2006[2006-11-18].http://www.goldcopd.com/Guidelineitem.asp? l1 =2-12 = 1&intId =989.
3Celli BR,MacNee W,Committee members.Standard for the diagnosis and treatment of patients with COPD:a summary of the ATS/ERS position paper.Eur Respir J,2004,23:932-946.
4Celli BR,Cote CG,Marin JM,ct al.The body mass index,airflow obstruction,dyspnea and exercise capacity index in chronic obstructive pulmonary disease.N Engl J Med,2004,350:1005-1012.