1 Department of Respiratory and Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China.
2 Department of Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, Chengdu, 610041, China.
3 Department of Respiratory and Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China. fengmingluo@outlook.com.