7Larson JL.lnspiratory muscle training with a pressure threshold breathing device in patients with chronic obstructive pulmorary disease.Am Rev Respir Dis,1988,138:689.
8Belman MJ.Targeted resistive ventilatory muslce training in chronic obstructive pulmonary disease.J Appl Physiol,1988,65:2726.
9Mura M,Zompatori M,Pacilli AM,et al.The presence of emphysema further impairs physiologic function in patients with idiopathic pulmonary fibrosis[J].Respir Care,2006;51:257-65.
10Jankowich MD,Polsky M,Klein M,et al.Heterogeneity in combined pulmonary fibrosis and emphysema[J].Respiration,2008;75:411-7.
8Fletcher MJ, Dahl BH. Expanding nurse practice in COPD: is it key to providing high quality, effective and safe patient care[J]. Prim Care Respir J, 2013,22(2) : 230.
9Alagappan VK, de Boer WI, Misra VK, et al. Angiogenesis and vascular remodeling in chronic airway diseases [J]. Cell Biochem Biophys,2013,67(2) : 219-234.
10Zhang C, Yan MY, Lu P, et al. Hypomethylation of perforin regulatory element in CD4+cells from rat spleens contributes to the development of autoimmune emphysema [J]. Respirology, 2014, 4(1) :376-381.
