4Pauwels RA, Buist AS, Calverley PM, et 81. Global strategy for the diagnosis, management, prevention of chronic obstructive pal- monary disease.NHBI/WHO Global Chronic Obstructive Lung Dis- ease (GOLD) Workshop summary [J]. Am J Respir Crit Care Med, 2001, 163 (5): 1256-1276.
5Wise RA. The value of forced expiratory volume in lsecond decline in the assessment of chronic obstructive pulmonary disease progres- sion [J].AmJMed, 2006, 119 (10A): s4-11.
6Gross NJ. Outcome measures for COPD treatments: a critical evalu- ation [J]. COPD, 2004, 34 (1): 41-57.
7Celli BR, MacNee W. ATS/ERS Task Force.Standards for the di- agnosis and treatment of patients with COPD: a summary of the ATS/ERS position paper [J]. Eur Respir J, 2004, 23 (6) : 932- 946.
8King GG, Muller NL, Whittall KP, et al. An analysis algorithm for measuring airway lumen and wall areas from highresolution com- puted tomographic data [J]. Am J Respir Crit Care Med, 2000, 161 (2 Ptl): 574-580.