In china COPD the third leading cause of death in rural and the fourth in urban in 2008 the second leading cause of DALYs lost in2001 Incidence and mortality is increasing MBBS project, Zhongshan HospitalMBBS project, Zhongshan Hospital In China • COPD —the third leading cause of death in rural and the fourth in urban in 2008 —the second leading cause of DALYs lost in 2001 • Incidence and mortality is increasing