1. Department of MICU, Department of Respiratory & Critical Care Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, PR China
2. Institute of Respiratory Diseases of Sun Yat-sen University, Guangzhou, PR China
3. VIP Healthcare Center, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, PR China
4. Department of Microbiology & Immunology, Basic Medical College, Jinan University, Guangzhou, PR China