研究单位:[1]PPeking Union Medical College Hospital,Beijing,Beijing,China,100730[2]Xinjiang Autonomous Region People's Hospital[3]Cangzhou Central Hospital[4]Chengdu sixth People's Hospital[5]Chengde Central Hospital[6]Beijing Fengtai Hospital[7]The Affiliated Hospital of Medical College, Ningbo University[8]Changzhi Medical College[9]Beijing Boai Hospital[10]Wuhu Hospital of Chinese Traditional Medicine[11]The First People's Hospital of Jingzhou[12]Fujian Provincial Hospital[13]Harbin Zhongshan Asthma Hospital[14]Rizhao Hospital of Chinese Traditional Medicine[15]3201 Hospital in Hanzhong[16]Sir Run Run Shaw Hospital[17]Chengdu Fifth People's Hospital[18]First People's Hospital of Changsha[19]Chongqing Jiangjin Central Hospital[20]the Affiliated hospital of Guilin medical university, China[21]Jiangxi People's Hospital[22]Chinese People's Liberation Army Navy Anqing Hospital[23]The Affiliated Hospital of Inner Mongolia Medical University[24]Yancheng Dafeng People's Hospital[25]ShuGuang Hospital[26]The First Affiliated Hospital of the Fourth Military Medical University[27]Taizhou Hospital[28]The Second Affiliated Hospital of Harbin Medical University[29]Third Affiliated Hospital of Xinjiang Medical University[30]First People's Hospital of Kunming[31]First People's Hospital of Yunnan[32]Pingxiang People's Hospital[33]Northern Jiangsu People's Hospital[34]Xiangya Hospital of Central South University[35]Guang'anmen Hospital of China Academy of Chinese Medical Sciences[36]Second Hospital of Jilin University[37]The Second Economic Hospital of Xinjiang Uygur Autonomous Region[38]Shanghai Zhongshan Hospital
Particulate matter(PM) exposure has been shown to increase the morbidity and mobility of a variety of respiratory diseases, including COPD and asthma. This study focus on the effects of PM on the pulmonary function and acute exacerbation of COPD and asthma patients in China, where PM exposure is much heavier than the United States and European countries.