1Zhong N, Wang C, Yao W, et al. Prevalence of chronic obstructive pulmonary disease in China: a large, population-based survey [ J ]. Am J Respir Crit Care Med, 2007:176 (8) :753-760.
2Brines R. Thome M. Clinical consensus on COPD [ J ]. Respir Med: COPD Update,2007,3(2) :42-48.
3Barr RG, Bourbeau J, Camargo CA, et al. Tiotropium for stable chronic obstructive pulmonary disease: A metaanalysis[ J]. Thorax,2006,61 (10) : 854-862.
4Calverley PM, Andeson JA, Celli B, et al. Salmeterol and fluticasone propionate and survival in chronic obstructive pulmonary disease [ J ]. N Engl J Med 2007,356(8) :775-789.
1Zhong N, Wang C, Yao W, et al.Prevalence of chronic obstructive pulmonary disease in China:a large, population based survey[J].Am J Respir Crit Care Med, 2007,176(8) : 753.
