作者机构:[1]Department of Emergency Medicine, Peking University Third Hospital, Beijing 100191, China, [2]Center for Environmental Risk and Damage Assessment, Chinese Academy of Environmental Planning, Beijing 100012, China, [3]Department of Respiratory Medicine , Peking University Third Hospital, Beijing 100191, China, [4]Department of Education , Peking University Third Hospital, Beijing 100191, China
相关基金:This study was supporied by a grant from the National Natural Science Foundation of China (No. 81172745).
Correspondence to: Dr. TIAN Zhao-xing, Department of Emergency Medicine, Peking University Third Hospital, Beijing 100191, China (Email: tjtzx@ 126.com)