Introduction
Data from the Global Burden of Disease study shows COPD mortality remains high. It ranks second only to cardiovascular, cerebrovascular diseases and malignant tumors, and is the third leading cause of death worldwide.1 Over the next…

Data from the Global Burden of Disease study shows COPD mortality remains high. It ranks second only to cardiovascular, cerebrovascular diseases and malignant tumors, and is the third leading cause of death worldwide.1 Over the next…