1 Department of Critical Care Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 New Songjiang Road, Songjiang, 201600, Shanghai, China.
2 Department of Critical Care Medicine, Wuhan Third Hospital,Wuhan University, 216 Guanshan avenue, Hongshan district, Wuhan, 430070, Hubei, China.
3 Department of Respiratory, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin two Road, Luwan district, 200020, Shanghai, China.
4 Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin two Road, Luwan district, 200020, Shanghai, China.
5 Department of Critical Care Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 New Songjiang Road, Songjiang, 201600, Shanghai, China. Electronic address: wangyusun@hotmail.com.