1Department of Emergency Medicine, Affiliated Baoan Hospital of Shenzhen, Southern Medical University, 118 LongjingEr Road, Baoan, Shenzhen, 518101, Guangdong, China
2Department of Respiratory, East Zone Sixth Division, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Science, Guangdong Provincial Geriatrics Institute, The second School of Clinical Medicine, Southern Medical University, No. 106, Zhongshan Second Road, Guangzhou, 510000, Guangdong, China
3Department of Critical Care Medicine, Affiliated Baoan Hospital of Shenzhen, Southern Medical University, Shenzhen, 518101, Guangdong, China