1 Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 shuaifuyuan, Dongcheng District, Beijing, 100730, China.
2 Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 shuaifuyuan, Dongcheng District, Beijing, 100730, China. tjmuhhw@163.com.
3 Department of Intensive Care, Erasmus MC University Hospital Rotterdam, Rotterdam, Netherlands.