Ambient air pollution and hospitalization for chronic obstructive pulmonary disease: Benefits from Three-Year Action Plan

• Wenfeng LuFirst Affiliated Hospital of Guangzhou Medical University
• Qi Tian
• Ruijun XuSun Yat-sen University
• Lan QiuGuangzhou Medical University
• Zhaoyu FanSun Yat-sen University
• Shuguang WangGuangzhou Medical University
• Tingting LiuSun Yat-sen University
• Jiayi LiGuangzhou Medical University
• Yingxin LiSun Yat-sen University
• Yaqi WangSun Yat-sen University
• Chunxiang ShiChina Meteorological Administration
• Yuewei LiuSun Yat-sen University
• Yun ZhouFirst Affiliated Hospital of Guangzhou Medical University